{"id":"clm_9B3815438148","entity":"claude-2-1","predicate":"model_release","value":"Claude 2.1","value_json":{"note":"date = post's publication date (Nov 21, 2023)","check":{"by":"research, quote read on the page","on":"2026-11-04","url":"https://www.anthropic.com/news/claude-2-1","quote":"Our latest model, Claude 2.1, is now available over API in our Console and is powering our claude.ai chat experience.","outcome":"checked","dated_by":"near"},"developer":"anthropic"},"valid_from":"2023-11-21","valid_to":null,"published":"2023-11-21","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://www.anthropic.com/news/claude-2-1","tier":"primary","publisher":"Anthropic","published_at":"2023-11-21T00:00:00+00:00"}],"evidence":{"by":"page-read","on":"2026-11-04","quote":"Our latest model, Claude 2.1, is now available over API in our Console and is powering our claude.ai chat experience.","url":"https://www.anthropic.com/news/claude-2-1"},"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"}}}