{"event":{"id":"evt-claude-100k-20230511","dedupe_key":"long_context_model_release:2023-05-11:anthropic-expands-claude-to-100k-context","event_type":"long_context_model_release","title":"Anthropic expands Claude to 100K context","summary":"Claude's context window expanded from roughly 9K to 100K tokens.","occurred_at":"2023-05-11T00:00:00.000Z","published_at":"2023-05-11T00:00:00.000Z","observed_at":"2026-10-07T12:39:09.000Z","reconstructed_at":"2026-10-07T12:55:58.000Z","ingest_type":"live_world_scan","locations":null,"status":"verified","confidence":0.98,"metadata":{"actors":["Anthropic"],"affected_layers":["layer-models","layer-software","layer-human"],"change_kind":"context_window_expansion","what_happened_at_time":"Claude's context window expanded from roughly 9K to 100K tokens.","evidence_at_time":"The contemporaneous primary source 'Introducing 100K Context Windows' documents this Q2 event.","q1_continuity":"Q1 is the canonical predecessor; this record stores only the supported Q2 delta.","retrospective_inference":"Interpretation is limited to evidence supportable by 2023-06-30.","uncertainty":"Long context does not guarantee perfect retrieval or reasoning."},"created_at":"2026-10-07T14:04:48.597Z","updated_at":"2026-10-07T14:04:48.597Z"},"artifacts":[{"id":"art-claude-100k-20230511","dedupe_key":"583378d890818cf0aed6fe5df381aa412bdaccf7077f766b257d41dc5ba561c0","canonical_url":"https://www.anthropic.com/news/100k-context-windows","evidence_locator":"","artifact_type":"long_context_model_release","title":"Claude 100K context","summary":"Claude's context window expanded from roughly 9K to 100K tokens.","creator_entities":["Anthropic"],"released_at":"2023-05-11T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2023-Q2"},"created_at":"2026-10-07T14:04:48.587Z","updated_at":"2026-10-07T16:27:14.256Z","relation":"evidenced_by"}],"signals":[{"id":"sig-q2-long-context-expansion","statement":"Commercial assistant models expanded toward document-scale context windows, increasing workable information scope while leaving retrieval accuracy, cost and reliability unresolved.","signal_type":"context_window_expansion","direction":"increasing","confidence":0.96,"epistemic_status":"supported_inference","mapping_mode":"retrospective","reconstructed_at":"2026-10-07T12:55:58.000Z","created_at":"2026-10-07T14:04:48.604Z","updated_at":"2026-10-07T14:04:48.604Z"}]}