I found that [LangChain](https://www.langchain.com/langchain) has pretty good abstractions and better support for multiple LLMs. They also have a good ecosystem of supporting products - LangGraph and LangSmith. Currently supported languages are Python and Javascript.
My problem with LangChain (aside from dubious API choices, some a legacy of when it first started) is that now it's a marketing tool for LangGraph Platform and LangSmith.
Their docs (incl. getting started tutorials) are content marketing for the platform services, needlessly pushing new users into more complex and possibly unnecessary direction in the name of user acquisition.
(I have the same beef with NextJs/Vercel and MongoDB).
Some time ago I built a rather thin wrapper for LLMs (multi provider incl local, templates, tools, rag, etc...) for myself. Sensible API, small so it's easy to maintain, and as a bonus, no platform marketing shoved in my face.
I keep an eye on what the LangChain ecosystem's doing, and so far the benefits ain't really there (for me, YMMV).
I agree that the LangChain docs and examples shouldn’t rely on their platform commercial products. Then the LangGraph and LangSmith documentation should layer in top of the LangChain docs.
