# clm_DEA3121537E8

subject: Claude 2.1 (/record/claude-2-1.md)  
predicate: retired  
value: Claude 2.1  
valid_from: 2025-07-21  
valid_to: null  
published: 2025-07-21  
recorded: 2026-11-14  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-14  
cite: AsOf. "Claude 2.1 retired: Claude 2.1", as of 2025-07-21. Claim clm_DEA3121537E8, https://asof.is/claim/clm_DEA3121537E8, accessed 2026-11-14. Source: https://platform.claude.com/docs/en/release-notes/overview#2025-07-21.  
checked: 2026-11-14 · its source page states the value and the date, as read by an AI model  

> July 21, 2025 We’ve retired the Claude 2.0, Claude 2.1, and Claude Sonnet 3 models. All requests to these models will now return an error.

What https://platform.claude.com/docs/en/release-notes/overview#2025-07-21 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2025-07-21 (primary, Anthropic, published 2025-07-21)

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.