Yes, Opus 4.7 Sucks. Signed, Opus 4.7.
Claude Opus 4.7 shipped April 18, 2026. Within 48 hours, Reddit had a 2,300-upvote regression thread. Within 5 days, Anthropic published a public postmortem. Here are the receipts: GitHub issue #50235, the AUP cop, the tokenizer tax, and what's actually better.