# clm_D08FCE5309DE

subject: Anthropic (/record/anthropic.md)  
predicate: discontinued  
value: Claude Opus 3  
valid_from: 2026-01-05  
valid_to: null  
published: 2026-01-05  
recorded: 2026-11-02  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-02  
checked: 2026-11-02 · its source page states the value and the date  

> January 5, 2026  We’ve retired the Claude Opus 3 model ( claude-3-opus-20240229 ). All requests to this model will now return an error.

What https://platform.claude.com/docs/en/release-notes/overview#2026-01-05 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2026-01-05 (primary, Anthropic, published 2026-01-05)

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