# Claude Sonnet 4.6 timeline

entity: /record/claude-sonnet-4-6.md  
id: ent_claude-sonnet-4-6  


## 2026

- 2026-02-17 | context_window | 1M token context window (beta) | valid | [clm_0DE4E8CF1DA4](/claim/clm_0DE4E8CF1DA4.md)
- 2026-02-17 | model_release | Claude Sonnet 4.6 | valid | [clm_9E78052E1A8A](/claim/clm_9E78052E1A8A.md)
- 2026-02-17 | predecessor | Sonnet 4.5 | valid | [clm_C67FB3D77302](/claim/clm_C67FB3D77302.md)
- 2026-02-17 | price | $3/$15 per million tokens | valid | [clm_D9D9147B30F6](/claim/clm_D9D9147B30F6.md)

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