Claude Opus 4.7 released — API breaking changes vs Opus 4.6 require migration

AI Impact Summary

Claude Opus 4.7 is generally available, delivering capability improvements and an updated tokenizer. The API introduces breaking changes versus Opus 4.6, so teams must migrate to Opus 4.7 before upgrading any production integrations to avoid call failures. The tokenizer change can alter token counts and input costs, necessitating re-evaluation of prompts and quotas. Plan a phased migration: review the breaking changes docs, update client libraries to 4.7, and validate behavior in a staging environment before full rollout.