Yes a strange comment. Opus 4.5 is significantly better than before and Opus 4.6 is even better. Same with the 5.2 and 5.3 Codex models.

If anything, the pace has increased.

This may be one of the most important graphs to keep an eye on: https://metr.org/ and it tracks well to my anecdotal experience.

You can see the industry did hit a bit of a wall in 2024 where the improvements drop below the log trend. However, in 2025 the industry is significantly _above_ the trend line.