Anthropic retiring Claude Sonnet 4 and Claude Opus 4 — migrate to 4.6 and 4.7

AI Impact Summary

Anthropic is sunsetting Claude Sonnet 4 and Claude Opus 4, requiring immediate migration efforts to ensure continued access to these models. The API retirement date is June 15, 2026, and users must transition to Claude Sonnet 4.6 and Claude Opus 4.7 to avoid service disruption. This deprecation impacts any applications relying on the older models, necessitating a thorough review of dependencies and a migration plan.