Claude Opus 4.7 briefing card headed Active does not mean unchanged, showing fast mode removed, sampling parameters deprecated, an index score of 57 on v4.0 against 54 on v4.1, and tentative retirement no sooner than 16 April 2027.

Claude Opus 4.7 Is Still Active. What Changed, and When Should You Migrate?

Anthropic still lists Claude Opus 4.7 as Active, with retirement no earlier than 16 April 2027. Fast mode was removed on 24 July, requests that worked on Opus 4.6 now return errors, and Amazon Bedrock runs its own lifecycle clock. A document-first audit of what the label does not cover, and how to choose between staying, moving to 4.8, or moving to 5.