Got really excited for this model and asked my Opus planners in 3 pretty different projects to use Sonnets instead of Opus subagents to help me experiment on HPC kernels faster. Not one of them ended up writing a single line of code... Sonnets just kept spinning, wasting tokens. Can't remember the last time it happened with Opus in my codebases. Reverting back.

I've seen this happen before when they launch new models. When Opus 4.7 came out it was "working" for 20+ min before I just exited entirely and waited till next day.

Went away on it's own.