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 no longer function after January 5, 2026, requiring immediate migration planning.
AI Impact Summary
OpenAI is retiring the Claude Opus 3 model, a significant shift for users relying on this high-performance model. The retirement, effective January 5, 2026, necessitates a migration to the newer Claude Opus 4.5 model or alternative solutions. This change impacts applications that currently leverage Opus 3 for complex reasoning and agentic coding, requiring developers to update their workflows and potentially re-evaluate their model choices.
OpenAI retiring Claude Opus 3 Model — migration to Claude Opus 4.5 required
Affected Systems
Claude Opus 3
- Date
- Date not specified
- Change type
- deprecation
- Severity
- critical