CriticalDeprecation
Anthropic retiring Claude Opus 3 model — migration to Sonnet 4.6 or Opus 4.7 required
Action Required
Applications using Claude Opus 3 will fail to receive responses after June 15, 2026, necessitating immediate migration to a supported model.
AI Impact Summary
Anthropic is retiring the Claude Opus 3 model, requiring immediate migration to Claude Sonnet 4.6 or Claude Opus 4.7. This change impacts any applications relying on Opus 3, as requests will now return an error. Users should prioritize migrating to the newer models to avoid service disruption, with a sunset date of June 15, 2026.
Anthropic retiring Claude Opus 3 model — migration to Sonnet 4.6 or Opus 4.7 required
Affected Systems
Claude Opus 3
- Date
- 15 Jun 2026
- Change type
- deprecation
- Severity
- critical