{"id":"clm_2D8CA87C7078","entity":"openai","predicate":"model_release","value":"gpt-4.1-nano","value_json":{"feed":"openai-api-changelog","item":"https://developers.openai.com/api/docs/changelog#2025-04-14","tags":{"v":2,"ai":true,"by":"claude-haiku-5-5","on":"2026-11-03","themes":["coding","developer_platform"],"model_tier":"small_fast","release_kind":"model"},"check":{"on":"2026-11-02","url":"https://developers.openai.com/api/docs/changelog#2025-04-14","pages":1,"quote":"Apr 14 Feature gpt-4.1 gpt-4.1-mini gpt-4.1-nano v1/responses v1/chat/completions v1/fine_tuning Added gpt-4.1 , gpt-4.1-mini , and gpt-4.1-nano models to the API.","outcome":"checked"},"evidence":"Feature · gpt-4.1 · gpt-4.1-mini · gpt-4.1-nano · v1/responses · v1/chat/completions · v1/fine_tuning · Added gpt-4.1 , gpt-4.1-mini , and gpt-4.1-nano models to the API. These new models feature improved instruction following, coding, and a larger context window (up to 1M tokens). gpt-4.1 and gpt-4","extracted_by":"claude-haiku-5-5","primary_source":true},"valid_from":"2025-04-14","valid_to":null,"published":"2025-04-14","recorded":"2026-11-02","confidence":0.7,"status":"valid","assertable":true,"superseded_by":null,"supersedes":[],"first_seen_at":"2026-11-02T23:47:29.068973+00:00","updated_at":"2026-11-03T00:09:21.172722+00:00","sources":[{"url":"https://developers.openai.com/api/docs/changelog#2025-04-14","tier":"primary","publisher":"OpenAI","published_at":"2025-04-14T00:00:00+00:00"}],"evidence":{"by":"page-read","on":"2026-11-02","quote":"Apr 14 Feature gpt-4.1 gpt-4.1-mini gpt-4.1-nano v1/responses v1/chat/completions v1/fine_tuning Added gpt-4.1 , gpt-4.1-mini , and gpt-4.1-nano models to the API.","url":"https://developers.openai.com/api/docs/changelog#2025-04-14","excerpt":"Feature · gpt-4.1 · gpt-4.1-mini · gpt-4.1-nano · v1/responses · v1/chat/completions · v1/fine_tuning · Added gpt-4.1 , gpt-4.1-mini , and gpt-4.1-nano models to the API. These new models feature improved instruction following, coding, and a larger context window (up to 1M tokens). gpt-4.1 and gpt-4"},"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"}}}