# OpenAI o1-preview

id: ent_openai-o1-preview  
kind: product  
timeline: /timelines/openai-o1-preview.md  
page: /record/openai-o1-preview  
same_as: https://asof.is/record/openai-o1-preview (how to cite the id: /identifiers.md)  

first o-series reasoning model, released as a preview

## Fact pages

One page per fact: the current value with its sources, then every dated value and what replaced what. Fetch any of them as markdown.

- [OpenAI o1-preview release date](/record/openai-o1-preview/model_release.md)
- [OpenAI o1-preview deprecation](/record/openai-o1-preview/deprecated.md)
- [OpenAI o1-preview retirement](/record/openai-o1-preview/retired.md)

## All claims

One claim per line, newest first. Superseded claims stay visible.

- [OpenAI o1-preview](/record/openai-o1-preview.md) | retired | o1-preview | valid 2025-07-28 to present | conf 0.95 | valid | [clm_1B1B38C9719E](/claim/clm_1B1B38C9719E.md)
  sources: https://platform.openai.com/docs/deprecations
- [OpenAI o1-preview](/record/openai-o1-preview.md) | deprecated | o1-preview | valid 2025-04-28 to present | conf 0.95 | valid | [clm_0D68885A729F](/claim/clm_0D68885A729F.md)
  sources: https://platform.openai.com/docs/deprecations

## Posts and Hugging Face repos (1)

Dated items from the entity's own feeds, and the days its Hugging Face repositories were created, newest first.

- [OpenAI o1-preview](/record/openai-o1-preview.md) | model_release | o1-preview | valid 2024-09-12 to present | conf 0.95 | valid | [clm_8F717870363F](/claim/clm_8F717870363F.md)
  sources: https://developers.openai.com/api/docs/changelog#2024-09-12

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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.