I regularly use Claude and friends where I ask it to use the web to look at specific GitHub repos or documentation to ask about current versions of things. The “LLMs just get their info from stack overflow” trope from the GPT-3 days is long dead - they’re pretty good at getting info that is very up to date by using tools to access the web. In some cases I just upload bits and pieces from a library along with my question if it’s particularly obscure or something home grown, and they do quite well with that too. Yes, they do get it wrong sometimes - just like stack overflow did too.