It seems like LLMs made really big strides for a while but don't seem to be getting better recently, and in some ways recent models feel a bit worse. I'm seeing some good results generating test code, and some really bad results when people go to far with LLM use on new feature work. Base on what I've seen it seems like spinning up new projects and very basic features for web apps works really well, but that doesn't seem to generalize to refactoring or adding new features to big/old code bases.

I've seen Claude and ChatGPT happily hallucinate whole APIs for D3 on multiple occasions, which should be really well represented in the training sets.