# GPT-5.1-Codex

id: ent_gpt-5-1-codex  
kind: product  
timeline: /timelines/gpt-5-1-codex.md  
page: /record/gpt-5-1-codex  
same_as: https://asof.is/record/gpt-5-1-codex (how to cite the id: /identifiers.md)  

GPT-5.1 optimized for agentic coding

## 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.

- [GPT-5.1-Codex release date](/record/gpt-5-1-codex/model_release.md)
- [GPT-5.1-Codex deprecation](/record/gpt-5-1-codex/deprecated.md)
- [GPT-5.1-Codex retirement](/record/gpt-5-1-codex/retired.md)

## All claims

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 Superseded claims stay visible.

- [GPT-5.1-Codex](/record/gpt-5-1-codex.md) | retired | gpt-5.1-codex | valid 2026-07-23 to present | conf 0.95 | valid | [clm_98D4559904E8](/claim/clm_98D4559904E8.md)
  sources: https://platform.openai.com/docs/deprecations
- [GPT-5.1-Codex](/record/gpt-5-1-codex.md) | deprecated | gpt-5.1-codex | valid 2026-04-22 to present | conf 0.95 | valid | [clm_1CF75671E227](/claim/clm_1CF75671E227.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.

- [GPT-5.1-Codex](/record/gpt-5-1-codex.md) | model_release | gpt-5.1-codex | valid 2025-11-13 to present | conf 0.95 | valid | [clm_E469597CD92B](/claim/clm_E469597CD92B.md)
  sources: https://developers.openai.com/api/docs/changelog#2025-11-13

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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.