# clm_DA9F9ECEC330

subject: Claude (/record/claude.md)  
predicate: model_release  
value: Claude Opus 4.5  
valid_from: 2025-11-24  
valid_to: null  
published: 2025-11-24  
recorded: 2026-10-31  
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  

> November 24, 2025 Claude Opus 4.5 launch We released our most powerful frontier model to date. Read our blog post for more information: Introducing Claude Opus 4.5 .

What https://support.claude.com/en/articles/12138966-release-notes#2025-11-24 says, word for word.

## Sources

- https://support.claude.com/en/articles/12138966-release-notes#2025-11-24 (primary, Anthropic, published 2025-11-24)

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