We noticed an interesting phenomenon related to the size of the repo. The bigger it is, the more its utility skews towards learning how to use the library as opposed to how to change it, i.e. for the big repos the chat is more useful for users than developers/maintainers.

Great question. For most small repos (10-20 source files) this works incredibly well out-of-the-box.

We stress-tested with repos like langchain, llamaindex, kubernetes and there the retrieval still needs work to effectively return relevant chunks. This is still an open research question.