# clm_E7D2DE6C258F

subject: Claude (/record/claude.md)  
predicate: context_window  
value: 1M token context window  
valid_from: 2026-02-05  
valid_to: 2026-02-17  
published: 2026-02-05  
recorded: 2026-11-02  
confidence: 0.70  
status: superseded  
assertable: true  
superseded_by: clm_180AF3A05000  
last_updated: 2026-11-02  
checked: 2026-11-02 · its source page states the value and the date  

> The 1M token context window is now available in beta for Claude Opus 4.6, in addition to Sonnet 4.5 and Sonnet 4. Long context pricing applies to requests exceeding 200k input tokens.

What https://platform.claude.com/docs/en/release-notes/overview#2026-02-05 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2026-02-05 (primary, Anthropic, published 2026-02-05)

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