Anthropic officially bans using subscription auth for third party use
252 points
4 hours ago
| 46 comments
| code.claude.com
| HN
andreagrandi
6 minutes ago
[-]
I'm only waiting for OpenAI to provide an equivalet ~100 USD subscription to entirely ditch Claude.

Opus has gone down the hill continously in the last week (and before you start flooding with replies, I've been testing opus/codex in parallel for the last week, I've plenty of examples of Claude going off track, then apologising, then saying "now it's all fixed!" and then only fixing part of it, when codex nailed at the first shot).

I can accept specific model limits, not an up/down in terms of reliability. And don't even let me get started on how bad Claude client has become. Others are finally catching up and gpt-5.3-codex is definitely better than opus-4.6

Everyone else (Codex CLI, Copilot CLI etc...) is going opensource, they are going closed. Others (OpenAI, Copilot etc...) explicitly allow using OpenCode, they explicitly forbid it.

This hostile behaviour is just the last drop.

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bothlabs
45 seconds ago
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I would expect, it still is only enforced in a semi-strict way.

I think what they want to achieve here is less "kill openclaw" or similar and more "keep our losses under control in general". And now they have a clear criteria to refer when they take action and a good bisection on whom to act on.

In case your usage is high they would block / take action. Because if you have your max subscription and not really losing them money, why should they push you (the monopoly incentive sounds wrong with the current market).

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chickensong
57 minutes ago
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Your core customers are clearly having a blast building their own custom interfaces, so obviously the thing to do is update TOS and put a stop to it! Good job lol.

I know, I know, customer experience, ecosystem, gardens, moats, CC isn't fat, just big boned, I get it. Still a dick move. This policy is souring the relationship, and basically saying that Claude isn't a keeper.

I'll keep my eye-watering sub for now because it's still working out, but this ensures I won't feel bad about leaving when the time comes.

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nostromo
21 minutes ago
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They'll all do this eventually.

We're in the part of the market cycle where everyone fights for marketshare by selling dollar bills for 50 cents.

When a winner emerges they'll pull the rug out from under you and try to wall off their garden.

Anthropic just forgot that we're still in the "functioning market competition" phase of AI and not yet in the "unstoppable monopoly" phase.

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bambax
14 minutes ago
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Unstoppable monopoly will be extremely hard to pull off given the number of quality open (weights) alternatives.

I only use LLMs through OpenRouter and switch somewhat randomly between frontier models; they each have some amount of personality but I wouldn't mind much if half of them disappeared overnight, as long as the other half remained available.

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nostromo
12 minutes ago
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I'm old, so I remember saying the same thing about Google and search.

I hope you're right!

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g-mork
45 minutes ago
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Imagine having a finite pool of GPUs worth more than their weight in gold, and an infinite pool of users obsessed with running as many queries against those GPUs in parallel as possible, mostly to review and generate copious amounts of spam content primarily for the purposes of feeling modern, and all in return for which they offer you $20 per month. If you let them, you must incur as much credit liability as OpenAI. If you don't, you get destroyed online.

It almost makes me feel sorry for Dario despite fundamentally disliking him as a person.

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echelon
34 minutes ago
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Why do you fundamentally dislike him as a person?

The only thing I've seen from him that I don't like is the "SWEs will be replaced" line (which is probably true and it's more that I don't like the factuality of it).

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baq
28 minutes ago
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It’s kinda obvious he’s a well spoken shark. Personally not an issue for me, you have to be at the top of a unicorn, but it isn’t something people in general like.
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baq
30 minutes ago
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Don’t be mad at it, be happy you were able to throw some of that sweet free vc money at your hobbies instead of paying the market rate.
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charcircuit
24 minutes ago
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They offer an API for people who want to build their own clients. They didn't stop people from being able to use Claude.
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weird-eye-issue
25 minutes ago
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That's what the API is for.
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paxys
3 hours ago
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I don't think it's a secret that AI companies are losing a ton of money on subscription plans. Hence the stricter rate limits, new $200+ plans, push towards advertising etc. The real money is in per-token billing via the API (and large companies having enough AI FOMO that they blindly pay the enormous invoices every month).
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mirzap
2 hours ago
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They are not losing money on subscription plans. Inference is very cheap - just a few dollars per million tokens. What they’re trying to do is bundle R&D costs with inference so they can fund the training of the next generation of models.

Banning third-party tools has nothing to do with rate limits. They’re trying to position themselves as the Apple of AI companies -a walled garden. They may soon discover that screwing developers is not a good strategy.

They are not 10× better than Codex; on the contrary, in my opinion Codex produces much better code. Even Kimi K2.5 is a very capable model I find on par with Sonnet at least, very close to Opus. Forcing people to use ONLY a broken Claude Code UX with a subscription only ensures they loose advantage they had.

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rjh29
1 hour ago
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> "just a few dollars per million tokens"

Google AI Pro is like $15/month for practically unlimited Pro requests, each of which take million tokens of context (and then also perform thinking, free Google search for grounding, inline image generation if needed). This includes Gemini CLI, Gemini Code Assist (VS Code), the main chatbot, and a bunch of other vibe-coding projects which have their own rate limits or no rate limits at all.

It's crazy to think this is sustainable. It'll be like Xbox Game Pass - start at £5/month to hook people in and before you know it it's £20/month and has nowhere near as many games.

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harrall
44 minutes ago
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OpenAI only released ChatGPT 4 years ago but…

Google has made custom AI chips for 11 years — since 2015 — and inference costs them 2-5x less than it does for every other competitor.

The landmark paper that invented the techniques behind ChatGPT, Claude and modern AI was also published by Google scientists 9 years ago.

That’s probably how they can afford it.

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gbear605
31 minutes ago
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I’m not familiar with the Claude Code subscription, but with Codex I’m able to use millions of tokens per day on the $200/mo plan. My rough estimate was that if I were API billing, it would cost about $50/day, or $1200/mo. So either the API has a 6x profit margin on inference, the subscription is a loss leader, or they just rely on most people not to go anywhere near the usage caps.
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hhh
32 minutes ago
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What walled garden man? There’s like four major API providers for Anthropic.
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MikeNotThePope
1 hour ago
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I wonder how many people have a subscription and don’t fully utilize it. That’s free money for them, too.
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andersmurphy
11 minutes ago
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Except all those GPUs running inference need to be replaced every 2 years.
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KingMob
1 hour ago
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> They are not losing money on subscription plans. Inference is very cheap - just a few dollars per million tokens. What they’re trying to do is bundle R&D costs with inference so they can fund the training of the next generation of models.

You've described every R&D company ever.

"Synthesizing drugs is cheap - just a few dollars per million pills. They're trying to bundle pharmaceutical research costs... etc."

There's plenty of legit criticisms of this business model and Anthropic, but pointing out that R&D companies sink money into research and then charge more than the marginal cost for the final product, isn't one of them.

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mirzap
1 hour ago
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I’m not saying charging above marginal cost to fund R&D is weird. That’s how every R&D company works.

My point was simpler: they’re almost certainly not losing money on subscriptions because of inference. Inference is relatively cheap. And of course the big cost is training and ongoing R&D.

The real issue is the market they’re in. They’re competing with companies like Kimi and DeepSeek that also spend heavily on R&D but release strong models openly. That means anyone can run inference and customers can use it without paying for bundled research costs.

Training frontier models takes months, costs billions, and the model is outdated in six months. I just don’t see how a closed, subscription-only model reliably covers that in the long run, especially if you’re tightening ecosystem access at the same time.

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sambull
3 hours ago
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The secret is there is no path on making that back.
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stingrae
31 minutes ago
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the path is by charging just a bit less than the salary of the engineers they are replacing.
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JimmaDaRustla
3 hours ago
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My crude metaphor to explain to my family is gasoline has just been invented and we're all being lent Bentley's to get us addicted to driving everywhere. Eventually we won't be given free Bentley's, and someone is going to be holding the bag when the infinite money machine finally has a hiccup. The tech giants are hoping their gasoline is the one that we all crave when we're left depending on driving everywhere and the costs go soaring.
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eru
3 hours ago
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Why? Computers and anything computer related have historically been dropping in prices like crazy year after year (with only very occasional hiccups). What makes you think this will stop now?
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shykes
2 hours ago
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Commodity hardware and software will continue to drop in price.

Enterprise products with sufficient market share and "stickiness", will not.

For historical precedent, see the commercial practices of Oracle, Microsoft, Vmware, Salesforce, at the height of their power.

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hugmynutus
1 hour ago
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> Commodity hardware and software will continue to drop in price.

The software is free (citation: Cuda, nvcc, llvm, olama/llama cpp, linux, etc)

The hardware is *not* getting cheaper (unless we're talking a 5+ year time) as most manufacturers are signaling the current shortages will continue ~24 months.

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denimnerd42
37 minutes ago
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GB300 NVL72 is 50% more expensive than GB200 I've heard.
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Wobbles42
53 minutes ago
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It has stopped. Demand is now rising faster than supply in memory, storage and GPUs.

We see vendors reducing memory in new smart phones in 2026 vs 2025 for example.

At least for the moment falling consumer tech hardware prices are over.

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Ekaros
40 minutes ago
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On consumer side looking at a few past generations I question that. I would guess that we are nearing some sort of plateau there or already on it. There was inflation, but still not even considering RAM prices from last jump gains relative to cost were not that massive.
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walterbell
2 hours ago
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Recent price trends for DRAM, SSDs, hard drives?
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aftbit
2 hours ago
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Short term squeeze, because building capacity takes time and real funding. The component manufacturers have been here before. Booms rarely last long enough to justify a build-out. If AI demand turns out to be sustained, the market will eventually adapt by building supply, and prices will drop. If AI demand turns out to be transient, demand will drop, and prices will drop.
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adrianN
2 hours ago
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Cars have also been dropping in price.
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Wobbles42
49 minutes ago
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And knives apparently.

I recently encountered this randomly -- knives are apparently one of the few products that nearly every household has needed since antiquity, and they have changed fairly little since the bronze age, so they are used by economists as a benchmark that can span centuries.

Source: it was an aside in a random economics conversation with charGPT (grain of salt?).

There is no practical upshot here, but I thought it was cool.

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sciencejerk
2 hours ago
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Evidence for this claim?
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adrianN
1 hour ago
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A few generations ago almost nobody could afford a car, now many low income families afford two.
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CamperBob2
2 hours ago
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In the GP's analogy, the Bentley can be rented for $3/day, but if you want to purchase it outright, it will cost you $3,000,000.

Despite the high price, the Bentley factory is running 24/7 and still behind schedule due to orders placed by the rental-car company, who has nearly-infinite money.

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echelon
2 hours ago
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I like this analogy.

I also think we're, as ICs, being given Bentleys meanwhile they're trying to invent Waymos to put us all out of work.

Humans are the cost center in their world model.

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snihalani
2 hours ago
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how do I understand what is the sustainable pricing?
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fulafel
2 hours ago
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Depends on how you do the accounting. Are you counting inference costs or are you amortizing next gen model dev costs. "Inference is profitable" is oft repeated and rarely challenged. Most subscription users are low intensity users after all.
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Someone1234
3 hours ago
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I agree; unfortunately when I brought up that they're losing before I get jumped on demanding me to "prove it" and I guess pointing at their balance sheets isn't good enough.
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mattas
3 hours ago
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The question I have: how much are they _also_ losing on per-token billing?
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imachine1980_
2 hours ago
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From what I understand, they make money per-token billing. Not enough for how much it costs to train, not accounting for marketing, subscription services, and research for new models, but if they are used, they lose less money.

Finance 101 tldr explanation: The contribution margin (= price per token -variable cost per token ) this is positive

Profit (= contribution margin x cuantity- fix cost)

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andersmurphy
56 seconds ago
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Do they make enough to replace their GPUs in two years?
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dcre
2 hours ago
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Why do you think they're losing money on subscriptions?
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andersmurphy
3 minutes ago
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Does a GPU doing inference server enough customers for long enough to bring in enough revenue to pay for a new replacement GPU in two years (and the power/running cost of the GPU + infrastructure). That's the question you need to be asking.

If the answer is not yes, then they are making money on inference. If the answer is no, the market is going to have a bad time.

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Yossarrian22
2 hours ago
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Because they're not saying they are making a profit
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mikeg8
1 hour ago
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That doesn’t mean that the subscription itself is losing money. The margin on the subscription could be fine, but by using that margin to R&D the next model, the org may still be intentionally unprofitable. It’s their investment/growth strategy, not an indictment of their pricing strategy.
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Wobbles42
48 minutes ago
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They have investors that paid for training of these models too. It could be argued that R&D for the next generation is a separate issue, but they need to provide a return on the R&D in this generation to stay in business.
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croes
2 hours ago
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But why does it matter which program you use to consume the tokens?

The sounds like a confession that claude code is somewhat wasteful at token use.

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airstrike
2 hours ago
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No, it's a confession they have no moat other than trying to hold onto the best model for a given use case.

I find that competitive edge unlikely to last meaningfully in the long term, but this is still a contrarian view.

More recently, people have started to wise up to the view that the value is in the application layer

https://www.iconiqcapital.com/growth/reports/2026-state-of-a...

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hannasm
2 hours ago
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Honestly I think I am already sold on AI, who is the first company that is going to show us all how much it really costs and start enshitification? First to market wins right?
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MillionOClock
3 hours ago
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I really hope someone from any of those companies (if possible all of them) would publish a very clear statement regarding the following question: If I build a commercial app that allows my users to connect using their OAuth token coming from their ChatGPT/Claude etc. account, do they allow me (and their users) to do this or not?

I totally understand that I should not reuse my own account to provide services to others, as direct API usage is the obvious choice here, but this is a different case.

I am currently developing something that would be the perfect fit for this OAuth based flow and I find it quite frustrating that in most cases I cannot find a clear answer to this question. I don't even know who I would be supposed to contact to get an answer or discuss this as an independent dev.

EDIT: Some answers to my comment have pointed out that the ToS of Anthropic were clear, I'm not saying they aren't if taken in a vacuum, yet in practice even after this being published some confusion remained online, in particular regarding wether OAuth token usage was still ok with the Agent SDK for personal usage. If it happens to be, that would lead to other questions I personally cannot find a clear answer to, hence my original statement. Also, I am very interested about the stance of other companies on this subject.

Maybe I am being overly cautious here but I want to be clear that this is just my personal opinion and me trying to understand what exactly is allowed or not. This is not some business or legal advice.

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paxys
3 hours ago
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I don't see how they can get more clear about this, considering they have repeatedly answered it the exact same way.

Subscriptions are for first-party products (claude.com, mobile and desktop apps, Claude Code, editor extensions, Cowork).

Everything else must use API billing.

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firloop
3 hours ago
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The biggest reason why this is confusing is the Claude Agent SDK[0] will use subscription/oauth credentials if present. The terms update implies that there's some use cases where that's ok and other use cases (commercial?) where using their SDK on a user's device violates terms.

[0] https://platform.claude.com/docs/en/agent-sdk/overview

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theturtletalks
3 hours ago
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Had the same question, comment below quotes their docs saying Agent SDK using oAuth token is also not allowed.
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BoorishBears
1 hour ago
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The SDK is Claude Code in a harnesss, so it works with your credentials the same way CC does.

But they're stating you can only use your subscription for your personal usage, not someone else's for their usage in your product.

I honestly think they're being short sighted not just giving a "3rd party quota" since they already show users like 4 quotas.

If the fear is 3rd party agents screwing up the math, just make it low enough for entry level usage. I suspect 3rd party token usage is bi-modal where some users just need enough to kick tires, but others are min-maxing for how mamy tokens they can burn as if that's its own reward

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dakolli
1 hour ago
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And at that point, you might as well use OpenRouter's PKCE and give users the option to use other models..

These kinds of business decisions show how these $200.00 subscriptions for their slot/infinite jest machines basically light that $200.00 on fire, and in general how unsustainable these business models are.

Can't wait for it all to fail, they'll eventually try to get as many people to pay per token as possible, while somehow getting people to use their verbose antigentic tools that are able to inflate revenue through inefficient context/ouput shenanigans.

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hombre_fatal
1 hour ago
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I think the subscription pricing exists because it’s a far more palatable way to bill people for day to day personal use.

I used Claude back when API per token pricing was the only option and it was bad for all the usual reasons pay-per-use sucks compared to flat billing: you’re constantly thinking about cost. Like trying to watch a Netflix video with a ticker in the corner counting up the cents you owe them.

I don’t understand your claim that they want people paying per token - the subscription is the opposite of that, and it also has upsides for them as a business since most people don’t saturate the usage limits, and the business gets to stuff a bunch of value-adds on a bundle offering which is generally a more lucrative and enticing consumer pricing model.

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gbear605
40 minutes ago
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The bundle only works if it’s +EV for them. A lot of analyses (though not all - it’s complicated) say that the $200/mo bundle (and certainly the $20/mo bundle) costs more than that for most users, and the bundle is currently a loss leader. If so, then eventually prices will need to go up, and API per usage pricing will seem much more attractive.
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zdragnar
22 minutes ago
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Even if it more expensive, people will prefer subscription pricing over pay per use.

When you ask it to do something and it goes off the rails, the payment plans have wildly different effects:

Subscription- oh well, let's try again with a different prompt

Pay per use- I just wasted money, this product sucks

Even if it is less common than not, it has an outsized impact on how people feel using it.

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baq
26 minutes ago
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It’s been obvious from the start that the $200 point is the free tier
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MillionOClock
3 hours ago
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You are talking about Anthropic and indeed compared to OpenAI or GitHub Copilot they have seemed to be the ones with what I would personally describe as a more restrictive approach.

On the other hand OpenAI and GitHub Copilot have, as far as I know, explicitly allowed their users to connect to at least some third party tools and use their quotas from there, notably to OpenCode.

What is unclear to me is whether they are considering also allowing commercial apps to do that. For instance if I publish a subscription based app and my users pay for the app itself rather than for LLM inference, would that be allowed?

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theturtletalks
3 hours ago
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What if you wrap the service using their Agent SDK?
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gexla
44 minutes ago
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That should be fine, because it's still using their tooling. And this seems like the better way to go. I have a couple of tools that work like this. I think the issue is mostly 3rd party harnesses that seek to do the same as Claude Code. And it seems reasonable that Anthropic decides how you can use the subscription, because it's heavily subsidized. Get a Claude $200 sub and max out the usage limits, then compare that usage to the cost of using their API. The difference is significant, which is why people are getting multiple $200 subs rather than paying for API usage (and I have seen reports where they are cracking down on this as well.)
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Imustaskforhelp
1 hour ago
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Quick question but what if I use claude code itself for the purpose?

https://github.com/rivet-dev/sandbox-agent/tree/main/gigacod... [I saw this inShow HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp] (https://news.ycombinator.com/item?id=46912682)

This can make Opencode work with Claude code and the added benefit of this is that Opencode has a Typescript SDK to automate and the back of this is still running claude code so technically should work even with the new TOS?

So in the case of the OP. Maybe Opencode TS SDK <-> claude code (using this tool or any other like this) <-> It uses the oauth sign in option of Claude code users?

Also, zed can use the ACP protocol itself as well to make claude code work iirc. So is using zed with CC still allowed?

> I don't see how they can get more clear about this, considering they have repeatedly answered it the exact same way.

This is confusing quite frankly, there's also the claude agent sdk thing which firloop and others talked about too. Some say its allowed or not. Its all confusing quite frankly.

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artdigital
3 hours ago
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That’s very clearly a no, I don’t understand why so many people think this is unclear.

You can’t use Claude OAuth tokens for anything. Any solution that exists worked because it pretended/spoofed to be Claude Code. Same for Gemini (Gemini CLI, Antigravity)

Codex is the only one that got official blessing to be used in OpenClaw and OpenCode, and even that was against the ToS before they changed their stance on it.

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adastra22
3 hours ago
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Is Codex ok with any other third party applications, or just those?
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prodigycorp
44 minutes ago
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Yes. You can build third party applications on top of codex app server. All open source. https://developers.openai.com/codex/app-server/
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artdigital
2 hours ago
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By default, assume no. The lack of any official integration guide should be a clear sign. Even saying that you reverse-engineer Codex for apps to pretend to be Codex makes it clear that this is not an officially endorsed thing to do
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turblety
23 minutes ago
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Codex is Open Source though, so I wonder at what stage me adding features to Codex is different from me starting a new project and using the subscription.

But I believe OpenAI does let you use their subscription in third parties, so not an issue anyway.

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theLiminator
3 hours ago
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Interested to know this too
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croes
2 hours ago
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But why does it matter which program consumes the tokens?
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kgwgk
35 minutes ago
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Why does it matter to the free buffet manager where do you consume the food? We may never know.
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blackoil
1 hour ago
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They'll own entire pipeline interface, conduit, backend. Interface is what people get habitual to. If I am a regular user of Claude Code, I may not shift to competitor for 10-20% gains in cost.
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esafak
2 hours ago
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They must be getting something out of it, because we sure aren't.
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gardnr
2 hours ago
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Cory Doctorow has a word for this..
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esafak
1 hour ago
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They think their position is strong enough to lock users in. I'm not so sure.
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whatsupdog
1 hour ago
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It's enshittification - for those who didn't know.
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xigoi
1 hour ago
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They want that sweet vendor lock-in.
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KingMob
1 hour ago
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Presumably because their flat rate pricing is based off their ability to manage token use via their first-party tools.

A third-party tool may be less efficient in saving costs (I have heard many of them don't hit Anthropic LLMs' caches as well).

Would you be willing to pay more for your plan, to subsidize the use of third-party tools by others?

---

Note, afaik, Anthropic hasn't come out and said this is the reason, but it fits.

Or, it could also just be that the LLM companies view their agent tools as the real moat, since the models themselves aren't.

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DrammBA
17 minutes ago
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But wouldn't a less efficient tool simply consume your 5-hour/weekly quota faster? There's gotta be something else, probably telemetry, maybe hoping people switch to API without fighting, or simply vendor lock-in.
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SeanAnderson
3 hours ago
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I think you're just trying to see ambiguity where it doesn't exist because the looser interpretation is beneficial to you. It totally makes sense why you'd want that outcome and I'm not faulting you for it. It's just that, from a POV of someone without stake in the game, the answer seems quite clear.
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eleventyseven
3 hours ago
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It is pretty obviously no. API keys billed by the token, yes, Oauth to the flat rate plans no.

> OAuth authentication (used with Free, Pro, and Max plans) is intended exclusively for Claude Code and Claude.ai. Using OAuth tokens obtained through Claude Free, Pro, or Max accounts in any other product, tool, or service — including the Agent SDK — is not permitted and constitutes a violation of the Consumer Terms of Service.

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MillionOClock
3 hours ago
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If you look at this tweet [1] and in particular responses under it, it still seems to me like some parts of it need additional clarification. For instance, I have seen some people interpret the tweet as meaning using the OAuth token is actually ok for personal experimentation with the Agent SDK, which can be seen as a slight contradiction with what you quoted. A parent tweet also mentioned the docs clean up causing some confusion.

None of this is legal advice, I'm just trying to understand what exactly is allowed or not.

[1] https://x.com/trq212/status/2024212380142752025?s=10

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adastra22
3 hours ago
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Read the actual ToS. What you describe is NOT allowed.
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eclipxe
2 hours ago
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That tweet is from a product leader on Claude Code itself...
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kahnclusions
2 hours ago
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A tweet is not a ToS.
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AlotOfReading
2 hours ago
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Then they should speak to legal about fixing the ToS before making public statements about their intentions with it. It won't look good to show up at arbitration and have to explain why your public comms contradict your ToS.
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croes
2 hours ago
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What flatrate?

Pro and Max are both limited

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margalabargala
1 hour ago
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Flat rate does not imply unlimited.
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ashikns
3 hours ago
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> OAuth authentication (used with Free, Pro, and Max plans) is intended exclusively for Claude Code and Claude.ai.

I think this is pretty clear - No.

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merb
44 minutes ago
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So it’s forbidden to use the Claude Mac app. I would say the ToS as it is, can’t be enforced
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kovek
2 hours ago
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Does https://happy.engineering/ need to use the API keys or can use oauth? It's basically a frontend for claude-cli.
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kzahel
1 hour ago
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It doesn't even touch auth right?

""" Usage policy

Acceptable use Claude Code usage is subject to the Anthropic Usage Policy. Advertised usage limits for Pro and Max plans assume ordinary, individual usage of Claude Code and the Agent SDK """

That tool clearly falls under ordinary individual use of Claude code. https://yepanywhere.com/ is another such tool. Perfectly ordinary individual usage.

https://yepanywhere.com/sdk-auth-clarification.html

The TOS are confusing because just below that section it talks about authentication/credential use. If an app starts reading api keys / credentials, that starts falling into territory where they want a hard line no.

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resonious
1 hour ago
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If it's a wrapper that invokes the `claude` binary then I believe it's fine.
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cmwelsh
1 hour ago
[-]
Is there a way to legally or even practically prevent this? `claude` CLI execution in a shell is certainly included in the subscription - it’s the product.
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laksjhdlka
3 hours ago
[-]
Anthropic has published a very clear statement. It's "no".
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direwolf20
55 minutes ago
[-]
Not allowed. They've already banned people for this.
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azuanrb
3 hours ago
[-]
Usually, it is already stated in their documentation (auth section). If a statement is vague, treat it as a no. It is not worth the risk when they can ban you at any time. For example, ChatGPT allows it, but Claude and Gemini do not.

https://developers.openai.com/codex/auth

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MillionOClock
3 hours ago
[-]
Maybe I am missing something from the docs of your link, but I unfortunately don't think it actually states anything regarding allowing users to connect and use their Codex quota in third party apps.
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s-lambert
3 hours ago
[-]
https://x.com/thdxr/status/2013010664776683644

I can't find anything official from OpenAI, but they have worked with the OpenCode people to support using your ChatGPT subscription in OpenCode.

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adastra22
3 hours ago
[-]
From TFA: “OAuth authentication (used with Free, Pro, and Max plans) is intended exclusively for Claude Code and Claude.ai. Using OAuth tokens obtained through Claude Free, Pro, or Max accounts in any other product, tool, or service — including the Agent SDK — is not permitted and constitutes a violation of the Consumer Terms of Service.”
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MillionOClock
3 hours ago
[-]
The comment you are responding to is about ChatGPT/Codex, not Claude.
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raincole
3 hours ago
[-]
They're not asking if Claude forbids it. They're asking if OpenAI (Codex, specifically) allows it.
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itissid
3 hours ago
[-]
One set of applications to build with subscription is to use the claude-go binary directly. Humanlayer/Codelayer projects on GitHub do this. Granted those are not ideal for building a subscription based business to use oathu tokens from Claude and OpenaAI. But you can build a business by building a development env and gating other features behind paywall or just offering enterprise service for certain features like vertical AI(redpanada) offerings knowledge workers, voice based interaction(there was a YC startup here the other day doing this I think), structured outputs and workflows. There is lots to build on.
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vicchenai
3 hours ago
[-]
The economic tension here is pretty clear: flat-rate subscriptions are loss leaders designed to hook developers into the ecosystem. Once third parties can piggyback on that flat rate, you get arbitrage - someone builds a wrapper that burns through $200/month worth of inference for $20/month of subscription cost, and Anthropic eats the difference.

What is interesting is that OpenAI and GitHub seem to be taking the opposite approach with Copilot/OpenCode, essentially treating third-party tool access as a feature that increases subscription stickiness. Different bets on whether the LTV of a retained subscriber outweighs the marginal inference cost.

Would not be surprised if this converges eventually. Either Anthropic opens up once their margins improve, or OpenAI tightens once they realize the arbitrage is too expensive at scale.

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sambull
3 hours ago
[-]
these subscriptions have limits.. how could someone use $200 worth on $20/month.. is that not the issue with the limits they set on a $20 plan, and couldn't a claude code user use that same $200 worth on $20/month? (and how do i do this?)
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tappio
1 hour ago
[-]
The limits in the max subscriptions are more generous and power users are generating loss.

I'm rather certain, though cannot prove it, that buying the same tokens would cost at least 10x more if bought from API. Anecdotally, my cursor team usage was getting to around 700$ / month. After switching to claude code max, I have so far only once hit the 3h limit window on the 100$ sub.

What Im thinking is that Anthropic is making loss with users who use it a lot, but there are a lot of users who pay for max, but don't actually use it.

With the recent improvements and increase of popularity in projects like OpenClaw, the number of users that are generating loss has probably massively increased.

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somenameforme
2 hours ago
[-]
I'd agree on this. I ended up picking up a Claude Pro sub and am very less than impressed at the volume allowance. I generally get about a dozen queries (including simple follow up/refinements/corrections) across a relatively small codebase, with prompts structured to minimize the parts of the code touched - and moving onto fresh contexts fairly rapidly, before getting cut off for their ~5 hour window. Doing that ~twice a day ends up getting cut off on the weekly limit with about a day or two left on it.

I don't entirely mind, and am just considering it an even better work:life balance, but if this is $200 worth of queries, then all I can say is LOL.

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bonesss
18 minutes ago
[-]
Bumping into those limits is trivial, those 5 hour windows are anxiety inducing, and I guess the idea is to have a credit card on tap to pay for overages but…

I’m messing around on document production, I can’t imagine being on a crunch facing a deadline or dealing with a production issue and 1) seeing some random fuck-up eat my budget with no take backs (‘sure thing, I’ll make a custom docx editor to open that…’), 2) having to explain to my boss why Thursday cost $500 more than expected because of some library mismatch, or 3) trying to decide whether we’re gonna spend or wait while stressing some major issue (the LLM got us in it, so we kinda need the LLM to get us out).

That’s a lot of extra shizz on top of already tricky situations.

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ac29
3 hours ago
[-]
The usage limit on your $20/month subscription is not $20 of API tokens (if it was, why subscribe?). Its much much higher, and you can hit the equivalent of $20 of API usage in a few days.
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dudeinhawaii
59 minutes ago
[-]
I think you've stated this in reverse.

API limits are infinite but you'd blow through $20 of usage in a maybe 1 hours or less of intense Opus use.

The subscription at $20/mo (or $200) allows for vastly more queries than $20 would buy you via API but you are constrained by hourly/weekly limits.

The $20/mo sub user will take a lot longer to complete a high token count task (due to start/stop) BUT they will cap their costs.

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scwoodal
2 hours ago
[-]
So I’m not allowed to use the $20 plan and max out its limits?
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alexandre_m
1 hour ago
[-]
Max out on their terms, not yours.

Their bet is that most people will not fill up 100% of their weekly usage for 4 consecutive weeks of their monthly plan, because they are humans and the limits impede long running tasks during working hours.

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ac29
1 hour ago
[-]
You can max it out via first party clients only.

I dont like it either, but its not an unreasonable restriction.

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archeantus
3 hours ago
[-]
Not according to this guy who works on Claude Code: https://x.com/trq212/status/2024212378402095389?s=20

What a PR nightmare, on top of an already bad week. I’ve seen 20+ people on X complaining about this and the related confusion.

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azuanrb
3 hours ago
[-]
No, it is prohibited. They're just updating the docs to be more clear about their position, which haven't changed. Their docs was unclear about it.
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stingraycharles
2 hours ago
[-]
Yes, it was always prohibited, hence the OpenCode situation one or two months ago.
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mh2266
2 hours ago
[-]
woof, does Anthropic not have a comms team and a clear comms policy for employees that aren’t on that comms team?
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JimmaDaRustla
3 hours ago
[-]
Incorrect, the third-party usage was already blocked (banned) but it wasn't officially communicated or documented. This post is simply identifying that official communication rather than the inference of actual functionality.
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sanex
2 hours ago
[-]
Going to keep using the agents sdk with my pro subscription until I get banned. It's not openclaw it's my own project. It started by just proxying requests to claude code though the command line, the sdk just made it easier. Not sure what difference it makes to them if I have a cron job to send Claude code requests or an agent sdk request. Maybe if it's just me and my toy they don't care. We'll see how the clarify tomorrow.
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ChaitanyaSai
2 hours ago
[-]
OK I hope someone from anthropic reads this. Your API billing makes it really hard to work with it in India. We've had to switch to openrouter because anthropic keeps rejecting all the cards we have tried. And these are major Indian banks. This has been going on for MONTHS
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woutr_be
1 hour ago
[-]
It’s the same here in Hong Kong. I can’t use any of my cards (personal or corporate) for OpenAI or Anthropic.

Have to do everything through Azure, which is a mess to even understand.

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ddxv
3 hours ago
[-]
The pressure is to boost revenue by forcing more people to use the API to generate huge numbers of tokens they can charge more for. LLMs are becoming common commodities as open weight models keep catching up. There are similarities with pirating in the 90s when users realize they can ctrl+c ctrl+v to copy a file/model and you don't need to buy a cd/use their paid API.
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chii
3 hours ago
[-]
And that is how it should be - the knowledge that the LLM trained on should be free, and cannot (and should never be) gatekept behind money.

It's merely the hardware that should be charged for - which ought to drop in price if/when the demand for it rises. However, this is a bottleneck at the moment, and hard to see how it gets resolved amidst the current US environment on sanctioning anyone who would try.

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nucleative
3 hours ago
[-]
Is there no value in how the training was done such that it's accessible via inference in a particularly useful way?
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chii
2 hours ago
[-]
That value is there, but google has decided to give it away as public knowledge (ala, their transformer paper).

And i would also argue that the researchers doing this are built on shoulders of other public knowledge - things funded by public institutions with taxpayer money.

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brothrock
54 minutes ago
[-]
This article is somewhat reassuring to me, someone experimenting with openclaw on a Max subscription. But idk anything about the blog so would love to hear thoughts.

https://thenewstack.io/anthropic-agent-sdk-confusion/

In my opinion (which means nothing). If you are using your own hardware and not profiting directly from Claude’s use (as in building a service powered by your subscription). I don’t see how this is a problem. I am by no means blowing through my usage (usually <50% weekly with max x5).

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yamirghofran
10 minutes ago
[-]
Cancelled my Claude and bought GLM coding plan + Codex.
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wg0
21 minutes ago
[-]
That's it. That's all the moat they have.
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agentifysh
43 minutes ago
[-]
I wrote a mcp bridge so that I don't have to copy and paste prompt back and forth between CLI and claude, chatgpt, grok, gemini

https://github.com/agentify-sh/desktop

Does this mean I have to remove claude now and go back to copy & pasting prompts for a subscription I am paying for ?!

wth happened to fair use ?

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raffkede
1 hour ago
[-]
At this point, where Kimi K2.5 on Bedrock with a simple open source harness like pi is almost as good the big labs will soon have to compete for users,... openai seems to know that already? While anthropic bans bans bans
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atlgator
1 hour ago
[-]
AI is the new high-end gym membership. They want you to pay the big fee and then not use what you paid for. We'll see more and more roadblocks to usage as time goes on.
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turblety
9 minutes ago
[-]
This was the analogy I was looking for! It feels like a very creepy way to make money, almost scammy and the gym membership/overselling hits the nail.
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petesergeant
1 hour ago
[-]
This feels more like the gym owner clarifying it doesn't want you using their 24-hour gym as a hotel just because you find their benches comfortable to lie down on, rather than a "roadblock to usage"
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redox99
50 minutes ago
[-]
Not really, these subscriptions have a clear and enforced 5h and weekly limit.
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lsaferite
2 hours ago
[-]
That page is... confusing.

> Advertised usage limits for Pro and Max plans assume ordinary, individual usage of Claude Code and the Agent SDK.

This is literally the last sentence of the paragraph before the "Authentication and credential use"

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jes5199
3 hours ago
[-]
there’s a million small scale AI apps that just aren’t worth building because there’s no way to do the billing that makes sense. If anthropic wanted to own that market, they could introduce a bring-your-own-Claude metaphor, where you login with Claude and token costs get billed to your personal account (after some reasonable monthly freebies from your subscription).

But the big guys don’t seem interested in this, maybe some lesser known model will carve out this space

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avaer
1 hour ago
[-]
This is going to happen. Unfortunately.

I shudder to think what the industry will look like if software development and delivery becomes like Youtubing, where the whole stack and monetization is funneled through a single company (or a couple) get to decide who gets how much money.

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MillionOClock
2 hours ago
[-]
I am a bit worried that this is the situation I am in with my (unpublished) commercial app right now: one of the major pain points I have is that while I have no doubt the app provides value in itself, I am worried about how many potential users will actually accept paying inference per token...

As an independent dev I also unfortunately don't have investors backing me to subsidize inference for my subscription plan.

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Imustaskforhelp
1 hour ago
[-]
I recommend kimi. It's possible for people to haggle with it to get cheap for the first month and as such try out your project and best part of the matter is that kimi intentionally supports api usage in any of their subscribed plan and they also recently changed their billing to be more token usage based like others instead of their previous tool calling limits

It's seriously one of the best models. very comparable to sonnet/opus although kimi isn't the best in coding. I think its a really great solid model overall and might just be worth it in your use case?

Is the use case extremely coding intensive related (where even some minor improvement can matter for 10-100x cost) or just in general. Because if not, then I can recommend Kimi.

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herbturbo
2 hours ago
[-]
>> there’s a million small scale AI apps that just aren’t worth building because there’s no way to do the billing that makes sense

Maybe they are not worth building at all then. Like MoviePass wasn’t.

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saganus
3 hours ago
[-]
Thariq has clarified that there are no changes to how SDK and max suscriptions work:

https://x.com/i/status/2024212378402095389

---

On a different note, it's surprising that a company that size has to clarify something as important as ToS via X

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tick_tock_tick
3 hours ago
[-]
> On a different note, it's surprising that a company that size has to clarify something as important as ToS via X

Countries clarify nation policy on X. Seriously it feels like half of the EU parliament live on twitter.

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adastra22
3 hours ago
[-]
FYI a Twitter post that contradicts the ToS is NOT a clarification.
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sawjet
3 hours ago
[-]
What's wrong with using X?
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minimaxir
3 hours ago
[-]
In the case you are asking in good faith, a) X requires logging in to view most of its content, which means that much of your audience will not see the news because b) much of your audience is not on X, either due to not having social media or have stopped using X due to its degradation to put it generally.
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raincole
3 hours ago
[-]
I'm not signed in but I can view the above linked tweet just fine.

Plus it's not a real clarification in anyway. It's just PR. Even if it's posted on Mastodon or Github or anywhere, I highly doubt you can use it to defend yourself if you get banned from violating their ToS.

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croes
2 hours ago
[-]
You can’t view answers and the tweet threat. You need to know every single tweet. You can’t open the politician‘s feed so you have to know that there is a tweet and which it is to get information.
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hedora
3 hours ago
[-]
c) it is controlled by a direct competitor and can bury / promote your customer communication at will.
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minimaxir
3 hours ago
[-]
Elon has enough sense not to cross that particular bridge.
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dpkirchner
2 hours ago
[-]
He was quick to ban links to Mastodon when it was on the rise, I'm not sure why he'd treat SpaceX/xAI competitors any differently.
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saganus
3 hours ago
[-]
Not bad per se but how much legal weight does it actually carry?

I presume zero.. but nonetheless seems like people will take it as valid anyway.

That can be dangerous I think.

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solresol
3 hours ago
[-]
I got banned for violating terms of use apparently, but I'm mystified as to what I rule I broke, and appealing just vanishes into the ether.
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theahura
4 hours ago
[-]
From the legal docs:

> Authentication and credential use

> Claude Code authenticates with Anthropic’s servers using OAuth tokens or API keys. These authentication methods serve different purposes:

> OAuth authentication (used with Free, Pro, and Max plans) is intended exclusively for Claude Code and Claude.ai. Using OAuth tokens obtained through Claude Free, Pro, or Max accounts in any other product, tool, or service — including the Agent SDK — is not permitted and constitutes a violation of the Consumer Terms of Service.

> Developers building products or services that interact with Claude’s capabilities, including those using the Agent SDK, should use API key authentication through Claude Console or a supported cloud provider. Anthropic does not permit third-party developers to offer Claude.ai login or to route requests through Free, Pro, or Max plan credentials on behalf of their users.

> Anthropic reserves the right to take measures to enforce these restrictions and may do so without prior notice.

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spullara
3 hours ago
[-]
why wouldn't they just make it so the SDK can't use claude subs? like what are they doing here?
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adastra22
3 hours ago
[-]
When your company happens upon a cash cow, you can either become a milk company or a meat company.
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halayli
33 minutes ago
[-]
What about using claude -p as an api interface?
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tiffanyh
3 hours ago
[-]
In enterprise software, this is an embedded/OEM use case.

And historically, embedded/OEM use cases always have different pricing models for a variety of reasons why.

How is this any different than this long established practice?

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ziml77
3 hours ago
[-]
It's not, but do you really think the people having Claude build wrappers around Claude were ever aware of how services like this are typically offered.
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akulbe
3 hours ago
[-]
Is this a direct shot at things like OpenClaw, or am I reading it wrong?
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planckscnst
1 hour ago
[-]
They even block Claude Code of you've modified it via tweakcc. When they blocked OpenCode, I ported a feature I wanted to Claude Code so I could continue using that feature. After a couple days, they started blocking it with the same message that OpenCode gets. I'm going to go down to the $20 plan and shift most of my work to OpenAI/ChatGPT because of this. The harness features matter more to me than model differences in the current generation.
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mapontosevenths
3 hours ago
[-]
Opencode as well. Folks have been getting banned for abusing the OAuth login method to get around paying for API tokens or whatever. Anthropic seems to prefer people pay them.
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serf
3 hours ago
[-]
its not that innocent.

a 200 dollar a month customer isn't trying to get around paying for tokens, theyre trying to use the tooling they prefer. opencode is better in a lot of ways.

tokens get counted and put against usage limits anyway, unless theyre trying to eat analytics that are CC exclusive they should allow paying customers to consume to the usage limits in however way they want to use the models.

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Bolwin
1 hour ago
[-]
Anthropic is offering a steep discount in their plans. I highly doubt they want you using it in a harness where you can trivially switch away when someone else releases a better model
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mapontosevenths
3 hours ago
[-]
> they should allow paying customers to consume to the usage limits in however way they want to use the models.

I think I agree, but it's their business to run however they like. They have competition if we don't like it.

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fastball
3 hours ago
[-]
A $200/m max subscriber using OpenCode and not wanting to use API keys with pay-per-token pricing is very clearly trying to get around paying for tokens.
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sambull
3 hours ago
[-]
Is there any limits to that users 200/month? Why should they not be able to use the limits to the extent from other tools?

If openclaw chews my 200/month up in 15 days... I don't get more requests for free

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fastball
9 minutes ago
[-]
There is no monthly limit, it (currently) is a weekly and 5-hourly limit. If they allow anyone to use any tool with their subscription service, you could have a system (like OpenClaw) which involves 0 human interaction and is constantly consuming 100% of your token limit, then waiting until limits reset to do it all over again. It seems fairly clear that Anthropic is probably losing money on such usage patterns.

Once again: you can use API keys and pricing to get UNLIMITED usage whenever you want. If you are choosing to pay for a subscription instead, it is because Anthropic is offering those subscriptions at a much better value-per-token. They are not offering such a subscription out of the goodness of their heart.

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baconner
3 hours ago
[-]
For sure, yes. They already added attempts to block opencode, etc.
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edg5000
1 hour ago
[-]
Their model actually doesn't have that much of a moat if at all. Their agent harness also doesn't, at least not for long. Writing an agent harness isn't that difficult. They are desperately trying to stay in power. I don´t like being a customer of this company and am investing lots of my time in moving away from them completely.
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avaer
1 hour ago
[-]
They are obviously losing money on these plans, just like all of the other companies in the space.

They are all desperately trying to stay in power, and this policy change (or clarification) is a fart in the wind in the grand scheme of what's going on in this industry.

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theptip
3 hours ago
[-]
I think this is shortsighted.

The markets value recurring subscription revenue at something like 10x “one-off” revenue, Anthropic is leaving a lot of enterprise value on the table with this approach.

In practice this approach forces AI apps to pay Anthropic for tokens, and then bill their customers a subscription. Customers could bring their own API key but it’s sketchy to put that into every app you want to try, and consumers aren’t going to use developer tools. And many categories of free app are simply excluded, which could in aggregate drive a lot more demand for subscriptions.

If Anthropic is worried about quota, seems they could set lower caps for third-party subscription usage? Still better than forcing API keys.

(Maybe this is purely about displacing other IDE products, rather than a broader market play.)

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herbturbo
2 hours ago
[-]
I think they are smart making a distinction between a D2C subscription which they control the interface to and eat the losses for vs B2B use where they pay for what they use.

Allows them to optimize their clients and use private APIs for exclusive features etc. and there’s really no reason to bootstrap other wannabe AI companies who just stick a facade experience in front of Anthropic’s paying customer.

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edg5000
1 hour ago
[-]
> eat the losses

Look at your token usage of the last 30 days in one of the JSON files generated by Claude Code. Compare that against API costs for Opus. Tell me if they are eating losses or not. I'm not making a point, actually do it and let me know. I was at 1 million. I'm paying 90 EUR/m. That means I'm subsidizing them (paying 3-4 times what it would cost with the API)! And I feel like I'm a pretty heavy user. Although people running it in a loop or using Gas Town will be using much more.

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dudeinhawaii
37 minutes ago
[-]
I just ran some numbers and it works out if you're a prolific user.

Over 9 days I would have spent roughly $63 dollars on Codex with 11.5M input tokens plus 141M cached input tokens and 1.3M output tokens.

That roughly mirrors the $100-200/wk in API spending that drove me to the subscription.

  | Category | Tokens | Rate (/1M) | Estimated Cost |
  |---|---:|---:|---:|
  | Input (uncached) | 11,568,331 | $1.75 | $20.24 |
  | Cached input | 141,566,720 | $0.175 | $24.77 |
  | Output | 1,301,078 | $14.00 | $18.22 |
  | Total | 154,436,129 | — | $63.23 |

BUT... like a typical gym user. This is a 30/d window and I only used it for 9 days, $63 worth. OpenAI kept the other $137.

It makes sense though for heavy use.

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bluegatty
3 hours ago
[-]
There's no decision to be made here, it's just way too expensive to have 3rd parties soak up the excess tokens, that's not the product being sold.

Especially as they are subsidized.

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techpression
2 hours ago
[-]
That’s not true, the market loves pay per use, see ”cloud”. It outperforms subscriptions by a lot, it’s not ”one-off”. And your example is not how companies building on top tend to charge, you either have your own infrastructure (key) or get charged at-cost + fees and service costs.

I don’t think Anthropic has any desire to be some B2C platform, they want high paying reliable customers (B2B, Enterprise).

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theptip
1 hour ago
[-]
> the market loves pay per use, see ”cloud”.

Cloud goes on the books as recurring revenue, not one-off; even though it's in principle elastic, in practice if I pay for a VM today I'll usually pay for one tomorrow.

(I don't have the numbers but the vast majority of cloud revenue is also going to be pre-committed long-term contracts from enterprises.)

> I don’t think Anthropic has any desire to be some B2C platform

This is the best line of argument I can see. But still not clear to me why my OP doesn't apply for enterprise, too.

Maybe the play is just to force other companies to become MCPs, instead of enabling them to have a direct customer relationship.

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techpression
32 minutes ago
[-]
Sure, but even if a subscription and per per use are both recurring revenue, pay per use is not a subscription. The point I was trying to make is that there’s a lot of money to be made in the model Anthropic seems to be going for, more than a monthly subscription fee would allow for.
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adastra22
3 hours ago
[-]
What is the point of developing against the Agent SDK after this change.
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8cvor6j844qw_d6
2 hours ago
[-]
Not surprised, its the official stance by Anthropic.

I'm more surprised by people using subscription auth for OpenClaw when its officially not allowed.

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scwoodal
3 hours ago
[-]
Why does it matter to Anthropic if my $200 plan usage is coming from Claude Code or a third party?

Doesn’t both count towards my usage limits the same?

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bluegatty
3 hours ago
[-]
If you buy a 'Season's Pass' for Disneyland, you cant 'sublet' it to another kid to use on the days you don't; It's not really buying a 'daily access rate'.

Anthropic subs are not 'bulk tokens'.

It's not an unreasonable policy and it's entirely inevitable that they have to restrict.

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scwoodal
3 hours ago
[-]
I’m not subletting my sub to anyone. I’m the only one using the third party harness.

I’m using their own SDK in my own CLI tool.

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Unearned5161
2 hours ago
[-]
It’s not a literal sublet to someone else, it’s subletting your tokens to another tool.

At its core it’s a tragedy of commons situation. Using a third party tool like OpenClaw is augmenting your usage far beyond what was anticipated when the subscription plan was made.

Same deal for unlimited storage on drive until people started abusing it.

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scwoodal
2 hours ago
[-]
My Claude sub isn’t unlimited.

I didn’t set the limits on the plan; change those if it’s a problem, not irritate your customer base.

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Unearned5161
1 hour ago
[-]
You have strong dedication towards taking things literally.

The issue is not that it's limited or unlimited, but rather about expected token usage across a user cohort. When you set a usage limit on something like Claude, or a gym, or a tutoring center, you need to do two things at once; set the limit high enough to attract the aspirations of your intended client base ("oh good this gym lets me go every day of the month if I want to"), but priced accurately enough so that you actually turn a profit on the average usage across most users (you ended up going 20 times the first month, but settled into 15 times a month after).

If there was suddenly a drug that you could take that would, while you slept, make your body walk to the gym and workout, so that you could max out that usage, the gym would be entitled to adjust either the pricing, the limit, or prohibit going to the gym while on the drug, given that they can't actually sustain all their members going every day.

As a correction, I've done some reading and when I said tragedy of the commons, what would fit better is a "congestion externality in a club good".

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croes
2 hours ago
[-]
It’s still me going to Disneyland, I just take a different route
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JimmaDaRustla
3 hours ago
[-]
Disingenuous analogy.

It's more buying a season pass for Disneyland, then getting told you can't park for free if you're entering the park even though free parking is included with the pass. Still not unreasonable, but brings to light the intention of the tool is to force the user into an ecosystem rather.

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bluegatty
2 hours ago
[-]
It's not a disingenuous analogy ... whatever it is.

But 'you can't park even though the ticket includes parking' is not an appropriate analogy because 3rd party use is definitely not intended. They did not 'state one thing' and the 'disallow it'.

This is a pretty straight forward case of people using their subscription for 'adjacent' use, and Anthropic being more explicit about it.

There's nothing fancy going on here.

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minimaxir
3 hours ago
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Any user who is using a third-party client is likely self-selected into being a power user who is less profitable.
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digdugdirk
3 hours ago
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They don't get as much visibility into your data, just the actual call to/from the api. There's so much more value to them in that, since you're basically running the reinforcement learning training for them.
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operatingthetan
3 hours ago
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Probably because the $20 plan is essentially a paid demo for the higher plans.
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hackingonempty
3 hours ago
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Increasing the friction of switching providers as much as possible is part of their strategy to push users to higher subscription tiers and deny even scraps to their competitors.
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zb3
2 hours ago
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They're losing money on this $200 plan and they're essentially paying you to make you dependent on Claude Code so they can exploit this (somehow) in the future.
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esafak
2 hours ago
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It's a bizarre plan because nobody is 'dependent' on Claude Code; we're begging to use alternatives. It's the model we want!
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alexandre_m
2 hours ago
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You’re not really paying for the model, you’re paying for the tool, the ecosystem, and the application layer around it.

Sonnet 4.6 in CC doesn’t behave the same way as Sonnet 4.6 in Antigravity.

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psoundy
2 hours ago
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When using Claude Code, it's possible to opt out of having one's sessions be used for training. But is that opt out for everything? Or only message content, such that there could remain sufficient metadata to derive useful insight from?
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vldszn
2 hours ago
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At this point, are there decent alternatives to Anthropic models for coding that allow third-party usage?
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syntaxing
2 hours ago
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OpenAI have been very generous in their plans in terms of token and what you use it with. Is Codex better or as good as Opus for coding? No. Is it a decent alternative? Very.
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Imustaskforhelp
1 hour ago
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Kimi is amazing for this. They offer API usage as well iirc if you buy their subscription.
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Bolwin
21 minutes ago
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Not regular api usage, just the kimi coding plan, which you can only use in some coding agents
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raffkede
1 hour ago
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Also the .99c deal has API Access
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Imustaskforhelp
1 hour ago
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Yes!
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slopinthebag
3 hours ago
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how can they even enforce this? can't you just spoof all your network requests to appear like it's coming from claude code?

in any case Codex is a better SOTA anyways and they let you do this. and if you aren't interested in the best models, Mistral lets you use both Vibe and their API through your vibe subscription api key which is incredible.

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Uehreka
3 hours ago
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> how can they even enforce this?

Many ways, and they’re under no obligation to play fair and tell you which way they’re using at any given time. They’ve said what the rules are, they’ve said they’ll ban you if they catch you.

So let’s say they enforce it by adding an extra nonstandard challenge-response handshake at the beginning of the exchange, which generates a token which they’ll expect on all requests going forward. You decompile the minified JS code, figure out the protocol, try it from your own code but accidentally mess up a small detail (you didn’t realize the nonce has a special suffix). Detected. Banned.

You’ll need a new credit card to open a new account and try again. Better get the protocol right on the first try this time, because debugging is going to get expensive.

Let’s say you get frustrated and post on Twitter about what you know so far. If you share info, they’ll probably see it eventually and change their method. They’ll probably change it once a month anyway and see who they catch that way (and presumably add a minimum Claude Code version needed to reach their servers).

They’ve got hundreds of super smart coders and one of the most powerful AI models, they can do this all day.

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slopinthebag
3 hours ago
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the internet has hundreds of thousands of super smart coders with the most powerful ai models as well, I think it's a bit harder than you're assuming.

you just need to inspect the network traffic with Claude code and mimic that

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planckscnst
1 hour ago
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When they blocked OpenCode, I was in the middle of adding a feature. I don't think it's possible to mimic CC in an undetectable way and have the feature work.

The feature allows the LLM to edit the context. For example, you can "compact" just portions of the conversation and replace it with a summary. Anthropic can see that the conversation suddenly doesn't share the same history as previous API calls.

In fact, I ported the feature to Claude Code using tweakcc, so it literally _is_ Claude Code. After a couple days they started blocking that with the same message that they send when they block third party tools.

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Uehreka
2 hours ago
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OK sure, but you’d better hope Claude Code gets it right on the first try, or that’s $200 down the drain. Also, what if the detection mechanism involves a challenge-response that happens once a week? Or randomly a couple times a month? Or after 15 minutes of use from a new public IP? Or arbitrarily if you ask it to code something with a particular topic?

There are lots of ways they could be doing this. And remember again, if they get you, they don’t have to tell you how they got you (so you might not be able to even glean information in return for the $200 you’d be losing).

Sure the internet has hundreds of thousands of super smart coders, but the subset who are willing to throw money and credit cards down the drain in order to maintain a circumvention strategy for something like this is pretty low. I’m sure a few people will figure it out, but they won’t want to tell anyone lest Anthropic nerf their workaround, so I doubt that exploits of this will become widespread.

And if you’re Anthropic, that’s probably good enough.

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johnfn
1 hour ago
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Then just run Claude Code in a PTY and proxy requests in and out?
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Imustaskforhelp
1 hour ago
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> Then just run Claude Code in a PTY and proxy requests in and out?

Exactly something I said too. There are projects which can do this and hook natively to opencode and even its sdk/api.

https://news.ycombinator.com/item?id=47069299#47070204 (I list a project which does this)

I really don't know how anthropic can somehow detect something like this.

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raincole
3 hours ago
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If your service's traffic is literally indistinguishable from Claude Code, then all it can do is what Claude Code does. Then why are the users going to choose your service instead of Claude Code?
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slopinthebag
2 hours ago
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Maybe because the UI doesn't flicker? There's a lot you can do to improve the UI for starters, and then the harness around the agent could also be improved upon, as long as the prompts are the same.
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stanguc
2 hours ago
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easily "bypassable", trust me :)
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Imustaskforhelp
1 hour ago
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see my comment here but I think instead of worrying about the decompile minified JS code etc., you can just essentially use claude code in the background and still do it even using opencode/its SDK thus giving sort of API access over CC subscription https://news.ycombinator.com/item?id=47069299#47070204

I am not sure how they can detect this. I can be wrong, I usually am but I think its still possible to use CC etc. even after this change if you really wanted to

But at this point, to me the question of GP that is that is it even worth it is definitely what I am thinking?

I think not. There are better options out there, they mentioned mistral and codex and I think kimi also supports maybe GLM/z.ai as well

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paxys
3 hours ago
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Pretty easy to enforce it - rather than make raw queries to the LLM Claude Code can proxy through Anthropic's servers. The server can then enforce query patterns, system prompts and other stuff that outside apps cannot override.
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cjpartridge
3 hours ago
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And once all the Claude subscribers move over to Codex subscriptions, I'd bet a large sum that OpenAI will make their own ToS update preventing automated/scripted usage.
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baconner
3 hours ago
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They can't catch everything but they can make your product you're building on top of it non viable when it gets popular enough to look for, like they did with opencode.
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slopinthebag
3 hours ago
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at least with open code you can just use a third party plugin to authenticate
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tbrownaw
3 hours ago
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> how can they even enforce this?

I would think that different tools would probably have different templates for their prompts?

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charcircuit
3 hours ago
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You could tell by the prompt being used.
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techpression
2 hours ago
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We don’t enforce speed limits, but it sucks when you get caught.

OpenAI will adjust, their investors will not allow money to be lost on ”being nice” forever, not until they’re handsomely paid back at least.

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Rapzid
3 hours ago
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Their moat is evaporating before our eyes. Anthropic is Microsoft's side piece, but Microsoft is married with kids to OpenAI.

And OpenAI just told Microsoft why they shouldn't be seeing Anthropic anymore; Gpt-5.3-codex.

RIP Anthropic.

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mccoyb
3 hours ago
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OpenAI has endorsed OAuth from 3rd party harnesses, and their limits are way higher. Use better tools (OpenCode, pi) with an arguably better model (xhigh reasoning) for longer …
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wyre
3 hours ago
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I am looking forward to switching to OpenAI once my claude max account is banned for using pi....
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TechSquidTV
3 hours ago
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My alt Google accounts were all banned from Gemini access. Luckily Google left my main account alone. They are all cracking down.
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sciencejerk
2 hours ago
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From 3rd party AI app use?
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drivebyhooting
3 hours ago
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How does this impact open router?

Can’t this restriction for the time being be bypassed via -p command line flag?

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minimaxir
3 hours ago
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OpenRouter uses the API and does not use any subscription auth.
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oger
1 hour ago
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So here goes my OpenClaw integration with Anthropic via OAuth… While I see their business risk I also see the onboarding path for new paying customers. I just upgraded to Max and would even consider the API if cost were controllable. I hope that Anthropic finds a smart way to communicate with customers in a constructive way and offers advice for the not so skilled OpenClaw homelabbers instead of terminating their accounts… Is anybody here from Anthropic that could pick up that message before a PR nightmare happens?
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deanc
1 hour ago
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Just a friendly reminder also to anyone outside the US that these subscriptions cannot be used for commercial work. Check the consumer ToS when you sign up. It’s quite clear.
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aydyn
3 hours ago
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Sonnet literally just recommended using a subscription token for openclaw. Even anthropic's own AI doesn't understand its own TOS.
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minimaxir
3 hours ago
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Sonnet was not trained with this information and extremely-recent-information-without-access-to-a-Web-Search-tool is the core case of hallucination.
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aydyn
1 hour ago
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Sonnet does have search available FYI.
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minimaxir
1 hour ago
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LLMs are lazy about using Search unless explicitly prompted to do so (either explicitly or by implying it with phrases such as "recent").

In the OP's case, there is no motivation for the LLM to perform a Search.

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hedora
3 hours ago
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Oh crap. I just logged into HN to ask if anyone knew of a working alternative to the Claude Code client. It's lost Claude's work multiple times in the last few days, and I'm ready to switch to a different provider. (4.6 is mildly better than 4.5, but the TUI is a deal breaker.)

So, I guess it's time to look into OpenAI Codex. Any other viable options? I have a 128GB iGPU, so maybe a local model would work for some tasks?

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simpleusername
3 hours ago
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QWEN models are quite nice for local use. Gemini 3 Pro is much better than Codex IMO.
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edg5000
1 hour ago
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Local? No, not currently. You need about 1TB VRAM. There are many harnesses in development at the time, keep a good look out. Just try many of them, look at the system prompts in particular. Consider DeepSeek using the official API. Consider also tweaking system prompts for whatever tool you end up using. And agree that TUI is meh; we need GUI.
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Imustaskforhelp
1 hour ago
[-]
Zed with CC using ACP?

Opencode with CC underneath using Gigacode?

OpenAI codex is also another viable path for what its worth.

I think the best model to my liking open source is kimi k2.5, so maybe you can run that?

Qwen is releasing some new models so I assume keep an eye on those and maybe some model can fit your use case as well?

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maxbond
1 hour ago
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Zed's ACP client is a wrapper around Agents SDK. So that will be a TOS violation.
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vcryan
3 hours ago
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You can use Claude CLI as a relay - yes, it needs to be there -but its not that different than use the API
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mercurialsolo
1 hour ago
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Codex has now caught up to Claude Opus and this is a defensive move by Anthropic
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zb3
2 hours ago
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This confirms they're selling those subscriptions at a loss which is simply not sustainable.
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Gigachad
2 hours ago
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They probably are but I don’t think that’s what this confirms. Most consumer flat rate priced services restrict usage outside of the first party apps, because 3rd party and scripted users can generate orders of magnitude more usage than a single user using the app can.

So it makes sense to offer simple flat pricing for first party apps, and usage priced apis for other usage. It’s like the difference between Google Drive and S3.

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zb3
2 hours ago
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I get your point - they might count on the user not using their full quota they're officially allowed to use (and if that's the case, Anthropic is not losing money). But then still - IF the user used the whole quota, Anthropic loses.. so what's advertised is not actually honest.

For me, flat rates are simply unfair either ways - if I'm not using the product much, I'm overpaying (and they're ok with that), otherwise it magically turns out that it's no longer ok when I actually want to utilize what I paid for :)

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Gigachad
1 hour ago
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At any rate, they offer the option to be billed exactly on your usage via the API. But if you tell the average person the service costs $x/million tokens they will have no idea how much that actually costs, they won't know what a token is or how much their employees are likely to use. While $30/user/month is something they can easily budget for and get approved.
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j45
3 hours ago
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That's too bad, in a way it was a bit of an unofficial app store for Anthropic - I am sure they've probably looked at that and hopefully this means there's something on it's way.
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sandeepkd
3 hours ago
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Not really sure if its even feasible to enforce it unless the idea is to discourage the big players from doing it.
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exabrial
3 hours ago
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The number one thing we need is cheap abundant decentralized clean energy, and these things are laughable.

Unfortunately neither political party can get all of the above.

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minimaxir
3 hours ago
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Are you implying that no one would use LLM SaaSes and everyone would self-host if energy costs were negligible?

That is...not how it works. People self-hosting don't look at their electricity bill.

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hedora
3 hours ago
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I was stuck on the part where they said neither party could provide cheap abundant decentralized clean energy. Biden / Obama did a great job of providing those things, to the point where dirty coal and natural gas are both more expensive than solar or wind.

So, which two parties could they be referring to? The Republicans and the Freedom Caucus?

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exabrial
2 hours ago
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Bro… re read your comment.
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mkw5053
3 hours ago
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And I just bought my mac mini this morning... Sorry everyone
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eleventyseven
3 hours ago
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You know that if you are just using a cloud service and not running local models, you could have just bought a raspberry pi.
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mkw5053
3 hours ago
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Yeah. I know it’s dumb but it’s also a very expensive machine to run BlueBubbles, because iMessage requires a real Mac signed into an Apple ID, and I want a persistent macOS automation host with native Messages, AppleScript, and direct access to my local dev environment, not just a headless Linux box calling APIs.
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hedora
2 hours ago
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My M2 macbook pro runs qwen fine, and so will any mac mini with maxed out ram.
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mkw5053
2 hours ago
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The only immediately available was the base 16GB version
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renewiltord
3 hours ago
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Harder to get at the Apple ecosystem. I have an old Macbook that just serves my reminders over the internet.
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beoberha
3 hours ago
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who knows when Apple decides to enter the game, but they will absolutely crush the personal agent market when they do.
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hedora
3 hours ago
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Apple has been doing personal agents for a while. They're crushing it so hard they must be tired of winning at this point.

For instance, the other day, the Siri button in maps told me it couldn't start navigation because it didn't know where it was. It was animating a blue dot with my real time position at the same time.

Don't get me started about the new iOS 26 notification and messaging filters. Those are causing real harm multiple times a day.

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