CriticalDeprecation
Anthropic retiring Claude Opus 3 model — migration to Claude Opus 4.5 required
Action Required
Applications currently using Claude Opus 3 will fail to function after June 15, 2026, necessitating immediate migration to a supported model.
AI Impact Summary
Anthropic is retiring the Claude Opus 3 model, marking a significant shift in its model offerings. Users must migrate to Claude Opus 4.5 or newer, impacting applications currently relying on Opus 3. This change introduces a new pricing structure for Opus 4.6 and Sonnet 4.6, including a 1M token context window now generally available, and introduces new features like fast mode and data residency controls, requiring developers to update their integrations.
Anthropic 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