# GPT-5.1-Codex deprecation

entity: /record/gpt-5-1-codex.md  
predicate: deprecated  
page: /record/gpt-5-1-codex/deprecated  
as_of: 2026-11-04  

As of November 4, 2026, the AsOf record says GPT-5.1-Codex was deprecated on April 22, 2026 (as gpt-5.1-codex), from a primary source (platform.openai.com). The record holds 1 claim on GPT-5.1-Codex's deprecation, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current deprecation

What the record asserts on 2026-11-04.

- [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

## Every dated value

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 Superseded claims stay visible.

- [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

## Questions this record answers

### When was GPT-5.1-Codex deprecated?

On April 22, 2026 (as gpt-5.1-codex), from a primary source (platform.openai.com) (status valid, confidence 0.95).


## Get this data

- JSON: /v1/entities/gpt-5-1-codex/deprecated (this fact) · /v1/entities/gpt-5-1-codex?predicates=deprecated (with the entity's coverage; add as_of=YYYY-MM-DD for a date)
- MCP: timeline(entity: "gpt-5-1-codex", predicates: ["deprecated"]) for every dated value · fetch(id: "/record/gpt-5-1-codex/deprecated.md") for this page
- Entity twin: /record/gpt-5-1-codex.md · timeline: /timelines/gpt-5-1-codex.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.