Comment by muzani

Anthropic's naming convention seems to follow an S-curve. So Opus 5 is actually a little worse than 4.7, but by the time it hits 5.5, it's at the steep part of the new S-curve.

Similar with Claude 4 being worse than 3.7, but peaking at 4.5. At 4.6 they started to hit the restrictions and 4.7 seemed to patch what they made worse.