{"entity":"gpt-5-3-codex","name":"GPT-5.3-Codex","events":[{"date":"2026-02-24","until":null,"published":"2026-02-24","recorded":"2026-11-04","predicate":"model_release","value":"gpt-5.3-codex","status":"valid","assertable":true,"id":"clm_55F8E9407504","evidence":{"by":"page-read","on":"2026-11-04","quote":"Feb 24 Feature gpt-5.3-codex v1/responses Released gpt-5.3-codex to the Responses API.","url":"https://developers.openai.com/api/docs/changelog#2026-02-24"}},{"date":"2026-10-01","until":null,"published":null,"recorded":"2026-11-04","predicate":"deprecated","value":"gpt-5.3-codex","status":"valid","assertable":true,"id":"clm_3C9D776B3539","evidence":{"by":"page-read","on":"2026-11-04","quote":"2026-10-01: GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano The following models are deprecated and will be removed from the API on April 1, 2027, with six months’ notice. Migrate to the recommended replacements before the shutdown date. Shutdown date Model / system Recommended replacement Apr 1, 2027 gpt-5.3-codex gpt-6-sol","url":"https://platform.openai.com/docs/deprecations"}}],"complete":true,"legend":{"dates":"valid_from: when the claim took effect (a period figure: the day its period closed). published: the earliest day a source on the record published it (a filing's filing date, a post's date; null when no source carries one). recorded: the day AsOf first held it. A figure can take effect weeks before it is published.","why_not":{},"checked_by":{"page-read":"its source page states the value and the date"}}}