{"entity":"claude-sonnet-4-5","name":"Claude Sonnet 4.5","events":[{"date":"2025-09-29","until":null,"published":null,"recorded":"2026-11-04","predicate":"model_release","value":"Claude Sonnet 4.5","status":"valid","assertable":true,"id":"clm_5B3CB4F2F885","evidence":{"by":"page-read","on":"2026-11-04","quote":"September 29, 2025 We’ve launched Claude Sonnet 4.5 , our best model for complex agents and coding, with the highest intelligence across most tasks.","url":"https://platform.claude.com/docs/en/release-notes/overview"}},{"date":"2026-09-30","until":null,"published":null,"recorded":"2026-11-04","predicate":"deprecated","value":"claude-sonnet-4-5-20250929","status":"valid","assertable":true,"id":"clm_CDD27AF61D3F","evidence":{"by":"page-read","on":"2026-11-04","quote":"claude-sonnet-4-5-20250929 Deprecated September 30, 2026 November 30, 2026","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"}}}