{"entity":"claude-2-1","name":"Claude 2.1","events":[{"date":"2023-11-21","until":null,"published":"2023-11-21","recorded":"2026-11-04","predicate":"predecessor","value":"Claude 2.0","status":"valid","assertable":true,"id":"clm_3BC5C78576BD","evidence":{"by":"page-read","on":"2026-11-04","quote":"Claude 2.1 has also made significant gains in honesty, with a 2x decrease in false statements compared to our previous Claude 2.0 model.","url":"https://www.anthropic.com/news/claude-2-1"}},{"date":"2023-11-21","until":null,"published":"2023-11-21","recorded":"2026-11-04","predicate":"model_release","value":"Claude 2.1","status":"valid","assertable":true,"id":"clm_9B3815438148","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"}},{"date":"2023-11-21","until":null,"published":"2023-11-21","recorded":"2026-11-04","predicate":"context_window","value":"200K token context window","status":"valid","assertable":true,"id":"clm_EB2E8F209197","evidence":{"by":"page-read","on":"2026-11-04","quote":"Claude 2.1 delivers advancements in key capabilities for enterprises—including an industry-leading 200K token context window, significant reductions in rates of model hallucination, system prompts and our new beta feature: tool use.","url":"https://www.anthropic.com/news/claude-2-1"}},{"date":"2025-01-21","until":null,"published":null,"recorded":"2026-11-04","predicate":"deprecated","value":"claude-2.1","status":"valid","assertable":true,"id":"clm_353889F4D96F","evidence":{"by":"page-read","on":"2026-11-04","quote":"On January 21, 2025, Anthropic notified developers using Claude 2, Claude 2.1, and Claude Sonnet 3 models of their upcoming retirements.","url":"https://platform.claude.com/docs/en/about-claude/model-deprecations"}},{"date":"2025-07-21","until":null,"published":null,"recorded":"2026-11-04","predicate":"retired","value":"claude-2.1","status":"valid","assertable":true,"id":"clm_88032FA366AC","evidence":{"by":"page-read","on":"2026-11-04","quote":"July 21, 2025 claude-2.1 claude-opus-4-8","url":"https://platform.claude.com/docs/en/about-claude/model-deprecations"}}],"complete":true,"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"}}}