I've been making use of copilot in VSCode to make changes in a codebase that's new to me, in a language that I can read if not necessarily write unaided - it's a dialect of SQL, so I can certainly understand what's happening, but generating new queries is very time-consuming (half of which is just stupid formatting stuff). Copilot seems to understand the style of the code in my project and so I don't have to do much work to make it conform, compared to my hand-written versions.

I've also written a lot of python 2 in my career, and writing python 3 still isn't quite native-level for me - and the AI tools let me make up for my lack of knowledge of modern Python.