CriticalDeprecation
OpenAI retiring Claude Opus 3 model — migration to Claude Opus 4.5 required
Action Required
Applications relying on the Claude Opus 3 model will cease to function after June 15, 2026, necessitating immediate migration to a supported alternative.
AI Impact Summary
OpenAI is retiring the Claude Opus 3 model, requiring immediate migration to a supported alternative like Claude Opus 4.5. This deprecation impacts any applications relying on Opus 3, which will return errors after June 15, 2026. Users should prioritize migrating to Claude Sonnet 4.6 or Claude Opus 4.7 to avoid service disruption.
OpenAI retiring Claude Opus 3 model — migration to Claude Opus 4.5 required
Affected Systems
Claude Opus 3
- Date
- 15 Jun 2026
- Change type
- deprecation
- Severity
- critical