# clm_7199A0F9C7B1

subject: Claude Mythos 5 (/record/claude-mythos-5.md)  
predicate: predecessor  
value: [Claude Mythos Preview](/record/claude-mythos-preview.md)  
valid_from: 2026-06-09  
valid_to: null  
published: 2026-06-09  
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  

> Mythos 5 will initially be deployed through Project Glasswing , in collaboration with the US government, as an upgrade to Claude Mythos Preview.

What https://www.anthropic.com/news/claude-fable-5-mythos-5 says, word for word.

## Sources

- https://www.anthropic.com/news/claude-fable-5-mythos-5 (primary, Anthropic, published 2026-06-09)

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