Just this morning, Cursor was giving me a ton of incorrect tab completions. When I use prompts, it tends to break more than it fixes. It's still a lot faster to write by hand. Lots of libraries that take *arguments in Python also cannot be groked by AI.
I have found it extremely useful for spinning up personal projects though.
My wife bought us Claude subscriptions and she's been straight-up vibe coding an educational game for our son with impressive results (she is a UX designer so a lot more attuned to vibes than gen-pop). I'm picking up some computational physics research threads I dropped in grad school and Claude Code has been incredible at everything besides physics and HPC. Define and parse an input file format, integrate I/O libraries, turn my slapdash notes into LaTeX with nice TiKz diagrams, etc.
Hoping I can transfer over some insights to make it more helpful at work.