{"entity":"claude-2-1","id":"ent_claude-2-1","name":"Claude 2.1","predicate":"model_release","label":"release date","page":"https://asof.is/record/claude-2-1/model_release","as_of":"2026-11-04","summary":"As of November 4, 2026, the AsOf record says Claude 2.1 was released on November 21, 2023, from a primary source (anthropic.com). The record holds 1 claim on Claude 2.1's release, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never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_9B3815438148"],"latest_period":null,"claims":[{"id":"clm_9B3815438148","value":"Claude 2.1","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,"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"}}],"replaced":[],"faq":[{"question":"When was Claude 2.1 released?","answer":"On November 21, 2023, from a primary source (anthropic.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":{"page-read":"its source page states the value and the date"}}}