# Claude Opus 4.1 timeline

entity: /record/claude-opus-4-1.md  
id: ent_claude-opus-4-1  


## 2025

- 2025-08-05 | model_release | Claude Opus 4.1 | valid | [clm_234B67F53ADD](/claim/clm_234B67F53ADD.md)
- 2025-08-05 | predecessor | [Claude Opus 4](/record/claude-opus-4.md) | valid | [clm_BBADFC6DA1EF](/claim/clm_BBADFC6DA1EF.md)

## 2026

- 2026-06-05 | deprecated | claude-opus-4-1-20250805 | valid | [clm_C4A9E812D526](/claim/clm_C4A9E812D526.md)
- 2026-08-05 | retired | claude-opus-4-1-20250805 | valid | [clm_D5B285E2BC53](/claim/clm_D5B285E2BC53.md)

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