{"entity":"claude-opus-5-5","id":"ent_claude-opus-5-5","name":"Claude Opus 5.5","predicate":"context_window","label":"context window","page":"https://asof.is/record/claude-opus-5-5/context_window","as_of":"2026-11-04","summary":"As of November 4, 2026, Claude Opus 5.5's context window on the AsOf record is 1 M tokens, dated September 22, 2026, from a primary source (platform.claude.com). The record holds 1 claim on Claude Opus 5.5's context window, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.","current":["clm_C8F8497EE25C"],"latest_period":null,"claims":[{"id":"clm_C8F8497EE25C","value":"1M tokens","valid_from":"2026-09-22","valid_to":null,"published":null,"recorded":"2026-11-04","confidence":0.95,"status":"valid","assertable":true,"superseded_by":null,"sources":[{"url":"https://platform.claude.com/docs/en/release-notes/overview","tier":"primary","publisher":"Anthropic (Claude Platform release notes)","published_at":null}],"evidence":{"by":"page-read","on":"2026-11-04","quote":"September 22, 2026 We’ve launched Claude Opus 5.5 ( claude-opus-5-5 ), a model for long-running agentic coding and knowledge work. It has a 1M token context window by default","url":"https://platform.claude.com/docs/en/release-notes/overview"}}],"replaced":[],"faq":[{"question":"What is Claude Opus 5.5's current context window?","answer":"1 M tokens, dated September 22, 2026, from a primary source (platform.claude.com). The record asserts this claim as of November 4, 2026 (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"}}}