Having used claude 4 for a few hours (and claude 3.7 and gemini 2.5 pro for much more than that) I really think it's much better in ways that aren't being well captured by benchmarks. It does a much better job of debugging issues then either 3.7 or gemini and so far it doesn't seem to have the 'reward hacking' behavior of 3.7.

It's a small step for model intelligence but a huge leap for model usability.