# GPT-5.1-Codex-Max

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

long-horizon agentic coding model

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

## All claims

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 Superseded claims stay visible.

- [GPT-5.1-Codex-Max](/record/gpt-5-1-codex-max.md) | retired | gpt-5.1-codex-max | valid 2026-07-23 to present | conf 0.95 | valid | [clm_FAC202E2646D](/claim/clm_FAC202E2646D.md)
  sources: https://platform.openai.com/docs/deprecations
- [GPT-5.1-Codex-Max](/record/gpt-5-1-codex-max.md) | deprecated | gpt-5.1-codex-max | valid 2026-04-22 to present | conf 0.95 | valid | [clm_188DEFE41A98](/claim/clm_188DEFE41A98.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-Max](/record/gpt-5-1-codex-max.md) | model_release | gpt-5.1-codex-max | valid 2025-12-04 to present | conf 0.95 | valid | [clm_926858D20AA8](/claim/clm_926858D20AA8.md)
  sources: https://developers.openai.com/api/docs/changelog#2025-12-04

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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.