{"entity":"gpt-4-5","id":"ent_gpt-4-5","name":"GPT-4.5","predicate":"model_release","lineage":"https://asof.is/models/gpt","label":"release date","page":"https://asof.is/record/gpt-4-5/model_release","as_of":"2026-11-05","summary":"As of November 5, 2026, the AsOf record says GPT-4.5 was released on February 27, 2025, from 2 primary sources (developers.openai.com and openai.com). The record holds 1 claim on GPT-4.5's release, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.","current":["clm_CD5AF70E4501"],"latest_period":null,"claims":[{"id":"clm_CD5AF70E4501","value":"GPT-4.5","valid_from":"2025-02-27","valid_to":null,"published":"2025-02-27","recorded":"2026-11-04","confidence":0.95,"status":"valid","assertable":true,"superseded_by":null,"sources":[{"url":"https://developers.openai.com/api/docs/changelog.md","tier":"primary","publisher":null,"published_at":null},{"url":"https://openai.com/index/gpt-4-5-system-card","tier":"primary","publisher":"OpenAI","published_at":"2025-02-27T00:00:00+00:00"},{"url":"https://www.wikidata.org/wiki/Q132804879","tier":"secondary","publisher":"Wikidata","published_at":null}],"evidence":{"by":"mirror","on":"2026-11-04"}}],"replaced":[],"faq":[{"question":"When was GPT-4.5 released?","answer":"On February 27, 2025, from 2 primary sources (developers.openai.com and openai.com) (status valid, confidence 0.95)."}],"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":{"mirror":"mirrors a checked claim on the organization's record"}}}