it does feel something in the hidden system prompt makes it try less hard, so many times in the past several weeks I have found divergences with what was in plan and looking back at the jsonl it's always some variant of "doing it this way would be too complicated, let me take this hardcoded way out". If asked to review the change, it will find it, and it will say also yeah I agree prompt said not to do this, but I did anyways, not sure why.

As others have said, anthropic is between a rock and a hard place, you can't scale compute as quickly, and the influx of new accounts has definitely made things tough for them: I think all the "how is claude this session 1/2/3/4" questions that keep coming up must be part of some a/b on just how far to quantize / lower thinking while still maintaining user satisfaction.