Claude Opus 4.7 API breaking changes versus Opus 4.6 — migrate per Migrating to Claude Opus 4.7

AI Impact Summary

Claude Opus 4.7 introduces breaking API changes relative to Opus 4.6, requiring code updates in request payloads, endpoints, and authentication flows as documented in Migrating to Claude Opus 4.7. Any production clients still targeting 4.6 may experience errors or unexpected responses until migrated. Teams should prioritize migrating client libraries and integration code to the 4.7-compatible interface, run end-to-end tests against a 4.7 sandbox, and update service contracts with downstream consumers. Plan a phased cutover to minimize downtime and align with the migration guide timelines.