{"entity":"claude-sonnet-4-6","name":"Claude Sonnet 4.6","events":[{"date":"2026-02-17","until":null,"published":"2026-02-17","recorded":"2026-11-04","predicate":"context_window","value":"1M token context window (beta)","status":"valid","assertable":true,"id":"clm_0DE4E8CF1DA4","evidence":{"by":"page-read","on":"2026-11-04","quote":"Sonnet 4.6 also features a 1M token context window in beta.","url":"https://www.anthropic.com/news/claude-sonnet-4-6"}},{"date":"2026-02-17","until":null,"published":null,"recorded":"2026-11-04","predicate":"model_release","value":"Claude Sonnet 4.6","status":"valid","assertable":true,"id":"clm_9E78052E1A8A","evidence":{"by":"page-read","on":"2026-11-04","quote":"February 17, 2026 We’ve launched Claude Sonnet 4.6 , our latest balanced model combining speed and intelligence for everyday tasks.","url":"https://platform.claude.com/docs/en/release-notes/overview"}},{"date":"2026-02-17","until":null,"published":"2026-02-17","recorded":"2026-11-04","predicate":"predecessor","value":"Sonnet 4.5","status":"valid","assertable":true,"id":"clm_C67FB3D77302","evidence":{"by":"page-read","on":"2026-11-04","quote":"our safety evaluations show that Sonnet 4.6 is a major improvement compared to its predecessor, Sonnet 4.5, and performs similarly to Opus 4.6.","url":"https://www.anthropic.com/news/claude-sonnet-4-6"}},{"date":"2026-02-17","until":null,"published":"2026-02-17","recorded":"2026-11-04","predicate":"price","value":"$3/$15 per million tokens","status":"valid","assertable":true,"id":"clm_D9D9147B30F6","evidence":{"by":"page-read","on":"2026-11-04","quote":"Pricing remains the same as Sonnet 4.5, starting at $3/$15 per million tokens.","url":"https://www.anthropic.com/news/claude-sonnet-4-6"}}],"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"}}}