Right now it just works with OpenAI chat models (gpt-3.5-turbo, gpt-4) but if there's interest I plan to extend it to have several backends. These would probably each be an existing library that implements generating structured output like https://github.com/outlines-dev/outlines or https://github.com/guidance-ai/guidance. If you have ideas how this should be done let me know - on a github issue would be great to make it visible to others.
Oh, and some companies offer APIs that match the OpenAI API and there are some open-source projects that do this for llama running locally. Since those would be compatible with the openai python package they will work with magentic too - though some of these do not support function calling.
Thanks for sharing! LocalAI supports function calling[0] so this should work for most or all features of magentic - I'm interested to see if concurrent requests work. I will test this out.
