There is Handy, an open source project meant to be a desktop tool, but I haven’t installed it yet to see how you pick your model.

Handy – Free open source speech-to-text app https://github.com/cjpais/Handy

Try https://ottex.ai/

I recently added support for Mistral provider, model is actually a very good one, I personally switched to it as my default model.

p.s. the app is free for personal user, has support for both local models and BYOK with OpenRouter, Groq, Mistral, Fireworks, and more coming soon.