# clm_E91575B30B2E

subject: Claude Opus 4.8 (/record/claude-opus-4-8.md)  
predicate: predecessor  
value: Opus 4.7  
valid_from: 2026-05-28  
valid_to: null  
published: no source on record carries a date  
recorded: 2026-11-04  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
checked: 2026-11-04 · its source page states the value and the date  

> May 28, 2026 Claude Opus 4.8 launch We’ve upgraded Claude Opus to a new version. Claude Opus 4.8 shows improvements over Opus 4.7 in coding, agentic skills, reasoning, and practical knowledge work tasks.

What https://support.claude.com/en/articles/12138966-release-notes says, word for word.

## Sources

- https://support.claude.com/en/articles/12138966-release-notes (primary, Anthropic (news))

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