# clm_EB896F1A17D3

subject: Claude Mythos 5.2 (/record/claude-mythos-5-2.md)  
predicate: model_release  
value: Claude Mythos 5.2  
valid_from: 2026-11-09  
valid_to: null  
published: 2026-11-09  
recorded: 2026-11-11  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-13  
cite: AsOf. "Claude Mythos 5.2 model release: Claude Mythos 5.2", as of 2026-11-09. Claim clm_EB896F1A17D3, https://asof.is/claim/clm_EB896F1A17D3, accessed 2026-11-13. Source: https://platform.claude.com/docs/en/release-notes/overview#2026-11-09.  
checked: 2026-11-13 · its source page states the value and the date, as read by an AI model  

> Introducing Claude Fable 5.2 and Claude Mythos 5.2 \ Anthropic Skip to main content News Research Policy Commitments Company Try Claude Introduction Performance and efficiency Coding Cybersecurity Science and engineering Safety and alignment Data privacy Availability November 9, 2026

What https://www.anthropic.com/claude-fable-and-mythos-5-2 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2026-11-09 (primary, Anthropic, published 2026-11-09)
- https://www.anthropic.com/claude-fable-and-mythos-5-2 (primary, Anthropic, published 2026-11-09)

---

AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.