# clm_EBA3A09D41BE

subject: Claude (/record/claude.md)  
predicate: feature_added  
value: Fast mode  
valid_from: 2026-02-07  
valid_to: null  
published: 2026-02-07  
recorded: 2026-11-01  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-01  
checked: 2026-11-01 · its source page states the value and the date  

> We’ve launched fast mode in research preview for Opus 4.6, providing significantly faster output token generation through the speed parameter.

What https://platform.claude.com/docs/en/release-notes/overview#2026-02-07 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2026-05-12 (primary, Anthropic, published 2026-05-12)
- https://platform.claude.com/docs/en/release-notes/overview#2026-02-07 (primary, Claude Platform release notes, published 2026-02-07)

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