# clm_93E1C526DF41

subject: Anthropic (/record/anthropic.md)  
predicate: model_release  
value: [Claude Fable 5](/record/claude-fable-5.md)  
valid_from: 2026-06-09  
valid_to: null  
published: 2026-06-09  
recorded: 2026-10-28  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-10-31  
cite: AsOf. "Anthropic model release: Claude Fable 5", as of 2026-06-09. Claim clm_93E1C526DF41, https://asof.is/claim/clm_93E1C526DF41, accessed 2026-11-09. Source: https://www.anthropic.com/news/claude-fable-5-mythos-5.  
checked: 2026-10-31 · its source page states the value and the date  

> Today we’re launching Claude Fable 5 : a Mythos-class 1 model that we’ve made safe for general use.

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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