Mixed
for my toughest jobs GPT-5+ High in `codex` has been the best tool I've used
lhl on Hacker News
In the thread “GPT-5.2”, replying to this comment
Helped: Deep reasoning and testing for complex bugs and porting tasks.
Got in the way: Inability to write UI code and unreliable understanding claims.
Anecdotally, I will say that for my toughest jobs GPT-5+ High in `codex` has been the best tool I've used - CUDA->HIP porting, finding bugs in torch, websockets, etc, it's able to test, reason deeply and find bugs. It can't make UI code for it's life however. …