Do you have a problem with LangChain and LlamaIndex due to their changing codebases/APIs/etc., or do you think there's a fundamental issue with RAG itself?
I think both projects were super useful, grateful for them. There is a lot of utility tucked away in both projects.
A year ago,I started using LLM APIs in non-Python languages and realized that sometimes building from scratch is better.
That being said, I do use RAG a lot (though generally code most of the implementations myself).