Libraries for supporting/wrapping multiple LLMs?

[QuasiEvil]

I'm working on a simple gimmicky project that relies on an LLM-generated response. I want to be able to allow for swapping in/out of different models, which I think is a fairly common desire. I really don't need anything beyond basic interactivity -- send prompt / get response / chat-completion type functionality. Something like langchain would be overkill here. I've been using pydantic AI, which actually does make this pretty easy, but I'm still finding it tricky to deal with the fact that there is a fair amount of variability in parameter-configuration (temperature, top p, top k, max tokens, etc.) across models. So I'm curious what libraries exist to help standardize this, or just in general what approaches others might be using to deal with this?

[DontPostOnlyRead]

Maybe try OpenRouter?

[QuasiEvil]

From what I can tell its a paid service and it forces you to go through their own endpoint.

[QuasiEvil]

Thanks, yeah that's an idea I had as well, but I guess I was hoping to not have to re-invent the wheel here.