# OpenAI o1-preview timeline

entity: /record/openai-o1-preview.md  
id: ent_openai-o1-preview  


## 2024

- 2024-09-12 | model_release | o1-preview | valid | [clm_8F717870363F](/claim/clm_8F717870363F.md)

## 2025

- 2025-04-28 | deprecated | o1-preview | valid | [clm_0D68885A729F](/claim/clm_0D68885A729F.md)
- 2025-07-28 | retired | o1-preview | valid | [clm_1B1B38C9719E](/claim/clm_1B1B38C9719E.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.