Ask HN: What software dev tasks have you found LLMs to be good at versus bad at?

Helping me get up to speed with an unfamiliar API much, much faster than any online searching.

I can describe an example application and see which API is chosen, along with which functions/methods are called and in what order and with what data structures.

I take it from there and build on that by hand. Take Python UI development, for example. I can ask for a window with a zoomable bitmap image with scrollbars. I get an answer I can refer to in seconds. If I know that I want PySide6 or PyQt6, I can specify that, or I can ask for a list of Python UI APIs and their strengths/weaknesses.