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OpenAI put a retirement notice on 2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano, reading "2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano".

OpenAIDEPRECATIONADDEDFRI OCT 2, 05:05

The line, as the page carries it

+2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano

The record

DOCUMENThttps://developers.openai.com/api/docs/deprecations
SOURCEopenai-deprecations
ROW2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano
OPERATIONadded
BEFORENothing was recorded because the row did not exist.
AFTER2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano
READ AT2026-10-02T05:05:35.093Z
SIGNALSdate, modelId

What went out

  • BLUESKY2026-10-02 12:08OpenAI's page listing models scheduled for retirement added "2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano". The same edit added "System | Recommended replacement" headings and removed "null" entries. #TechBluesky

When a lab changes a document

The engine refetches every registered document on a schedule and files the line that moved. Model cards, system cards, pricing pages, API changelogs and deprecation notices all change without an announcement. Leave an address and Context Window writes when one does.