Thanks for your interest! We currently support 7 models from OpenAI and Anthropic including gpt-3.5 and gpt-4. You can definitely configure the agents to the specific needs of your application including dynamic configuration that changes for each user. The fine-tuning of base models is currently not supported but our early customers have not really needed this.
Happy to help you with your specific use case! Feel free to reach out to me at anar@proficientai.com or our Discord channel. Also you should find much of this information in documentation.
Speed of development on these guys is huge, and have enjoyed using their SDKs. Community is getting involved in building things like auto-retry with backoff and other pretty helpful features in SDKs. Big fan of these guys!
What's the thought process behind the product with API Keys? Why do you build those for your end user, and what's the goal of someone using that. Unless I'm misinterpreting.
Can't give out code that can't be exposed to the public.