# clm_21F51BB8C407

subject: Anthropic (/record/anthropic.md)  
predicate: model_release  
value: Claude Opus 4.8  
valid_from: 2026-05-28  
valid_to: null  
published: 2026-05-28  
recorded: 2026-10-29  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-10-31  
checked: 2026-10-31 · its source page states the value and the date  

> We’re upgrading Claude Opus to a new version: Claude Opus 4.8. It builds on Opus 4.7 with improvements across benchmarks, and is a more effective collaborator. It’s available today for the same price.

What https://www.anthropic.com/news/claude-opus-4-8 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2026-05-28 (primary, Anthropic, published 2026-05-28)
- https://www.anthropic.com/news/claude-opus-4-8 (primary, Anthropic, published 2026-05-28)

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