{"id":"clm_88F24D97EEE0","entity":"grok-4-fast","predicate":"retired","value":"grok-4-fast-reasoning","value_json":{"note":"retired 12:00 PM PT; slug thereafter redirects (grok-4.3, or grok-build-0.1 for grok-code-fast-1)","check":{"by":"research, quote read on the page","on":"2026-11-04","url":"https://docs.x.ai/developers/migration/may-15-retirement","quote":"Effective May 15, 2026 at 12:00 PM PT , the following models will be retired from the xAI API: grok-4-1-fast-reasoning grok-4-1-fast-non-reasoning grok-4-fast-reasoning grok-4-fast-non-reasoning grok-4-0709 grok-code-fast-1 grok-3","outcome":"checked","dated_by":"quote"}},"valid_from":"2026-05-15","valid_to":null,"published":null,"recorded":"2026-11-04","confidence":0.95,"status":"valid","assertable":true,"superseded_by":null,"supersedes":[],"first_seen_at":"2026-11-04T02:40:06.661518+00:00","updated_at":"2026-11-04T02:40:23.583789+00:00","sources":[{"url":"https://docs.x.ai/developers/migration/may-15-retirement","tier":"primary","publisher":"xAI (docs)","published_at":null}],"evidence":{"by":"page-read","on":"2026-11-04","quote":"Effective May 15, 2026 at 12:00 PM PT , the following models will be retired from the xAI API: grok-4-1-fast-reasoning grok-4-1-fast-non-reasoning grok-4-fast-reasoning grok-4-fast-non-reasoning grok-4-0709 grok-code-fast-1 grok-3","url":"https://docs.x.ai/developers/migration/may-15-retirement"},"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"}}}