At least now we also have a tracker: https://marginlab.ai/trackers/claude-code/

Saw this the other day and loved it. Especially seeing Opus 4.5 degrading prior to the 4.6 release (IIRC) and Codex staying very stable and even improving over time.

But FYI the blog post is not about the actual model being dumbed down, but the command line interface.