Claude Opus 4.1
validasserted
- Valid from
- 2026-08-05
- Valid until
- still holds
- Published
- 2026-08-05
- Recorded by AsOf
- 2026-10-31
- Checked
- 2026-10-31 · its source page states the value and the date
- Confidence
- 0.70
Sources
“We’ve retired the Claude Opus 4.1 model ( claude-opus-4-1-20250805 ). All requests to this model on the Claude API will now return an error.”— what the page says, read 2026-10-31
/claim/clm_758B7785187D.md/v1/claims/clm_758B7785187Dtimelinesubmit a correction