alt Hacker NewsThe article has a benchmark and Opus has best score in two categories and the second-best in another (there are only three categories). Opus is probably the best choice when it comes to producing readable code right now. GPT (for example) lags way behind.
Anecdotally it’s the exact opposite for me: gpt 5.4 is leagues ahead of opus for the kind of backend work I do. Opus keeps making stupid mistakes while overengineering the irrelevant parts. However when I have to work on the backoffice ui, I still pick opus.