# GPT-4.1 nano deprecation

entity: /record/gpt-4-1-nano.md  
predicate: deprecated  
page: /record/gpt-4-1-nano/deprecated  
as_of: 2026-11-04  

As of November 4, 2026, the AsOf record says GPT-4.1 nano was deprecated on April 22, 2026 (as gpt-4.1-nano), from a primary source (platform.openai.com). The record holds 1 claim on GPT-4.1 nano's deprecation, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.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-4.1 nano](/record/gpt-4-1-nano.md) | deprecated | gpt-4.1-nano | valid 2026-04-22 to present | conf 0.95 | valid | [clm_EA9D392DF52E](/claim/clm_EA9D392DF52E.md)
  sources: https://platform.openai.com/docs/deprecations

## Every dated value

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 Superseded claims stay visible.

- [GPT-4.1 nano](/record/gpt-4-1-nano.md) | deprecated | gpt-4.1-nano | valid 2026-04-22 to present | conf 0.95 | valid | [clm_EA9D392DF52E](/claim/clm_EA9D392DF52E.md)
  sources: https://platform.openai.com/docs/deprecations

## Questions this record answers

### When was GPT-4.1 nano deprecated?

On April 22, 2026 (as gpt-4.1-nano), from a primary source (platform.openai.com) (status valid, confidence 0.95).


## Get this data

- JSON: /v1/entities/gpt-4-1-nano/deprecated (this fact) · /v1/entities/gpt-4-1-nano?predicates=deprecated (with the entity's coverage; add as_of=YYYY-MM-DD for a date)
- MCP: timeline(entity: "gpt-4-1-nano", predicates: ["deprecated"]) for every dated value · fetch(id: "/record/gpt-4-1-nano/deprecated.md") for this page
- Entity twin: /record/gpt-4-1-nano.md · timeline: /timelines/gpt-4-1-nano.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.