# Claude Mythos Preview timeline

entity: /record/claude-mythos-preview.md  
id: ent_claude-mythos-preview  


## 2026

- 2026-04-07 | model_release | Claude Mythos Preview | valid | [clm_8FBB9EF60E7B](/claim/clm_8FBB9EF60E7B.md)
- 2026-06-09 | deprecated | claude-mythos-preview | valid | [clm_C2876AD1EB33](/claim/clm_C2876AD1EB33.md)

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