{"id":"clm_816D8CB77D31","entity":"xai","predicate":"released","value":"Grok 4.1 Fast","value_json":{"feed":"xai-news","item":"https://x.ai/news/grok-4-1-fast","tags":{"v":1,"by":"claude-haiku-5-5","on":"2026-10-31","themes":["agents","connectors"],"model_tier":"small_fast","release_kind":"model"},"check":{"on":"2026-10-29","url":"https://x.ai/news/grok-4-1-fast","pages":1,"quote":"Today, we’re excited to  launch two powerful new additions to the xAI API: Grok 4.1 Fast , our best tool-calling model with a 2M context window.","outcome":"checked"},"evidence":"Bringing the next generation of tool-calling agents to the xAI API","extracted_by":"claude-haiku-5-5","primary_source":true},"valid_from":"2025-11-19","valid_to":null,"published":"2025-11-19","recorded":"2026-10-29","confidence":0.7,"status":"valid","assertable":true,"superseded_by":null,"supersedes":[],"first_seen_at":"2026-10-29T03:46:29.529459+00:00","updated_at":"2026-10-31T02:25:31.995061+00:00","sources":[{"url":"https://x.ai/news/grok-4-1-fast","tier":"primary","publisher":"xAI","published_at":"2025-11-19T00:00:00+00:00"}],"evidence":{"by":"page-read","on":"2026-10-29","quote":"Today, we’re excited to  launch two powerful new additions to the xAI API: Grok 4.1 Fast , our best tool-calling model with a 2M context window.","url":"https://x.ai/news/grok-4-1-fast","excerpt":"Bringing the next generation of tool-calling agents to the xAI API"},"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"}}}