{"entity":"claude-fable-5-1","id":"ent_claude-fable-5-1","name":"Claude Fable 5.1","predicate":"context_window","label":"context window","page":"https://asof.is/record/claude-fable-5-1/context_window","as_of":"2026-11-04","summary":"As of November 4, 2026, Claude Fable 5.1's context window on the AsOf record is 1 M token context window, dated September 1, 2026, from a primary source (platform.claude.com). The record holds 1 claim on Claude Fable 5.1's context window, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never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_FF2C96341E44"],"latest_period":null,"claims":[{"id":"clm_FF2C96341E44","value":"1M token context window","valid_from":"2026-09-01","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":"Both models support a 1M token context window by default, 128k max output tokens, and always-on adaptive thinking , at $10 / $50 USD per MTok","url":"https://platform.claude.com/docs/en/release-notes/overview"}}],"replaced":[],"faq":[{"question":"What is Claude Fable 5.1's current context window?","answer":"1 M token context window, dated September 1, 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"}}}