{"event":{"id":"evt-2024q3-llama31","dedupe_key":"historical_material_change:2024-07-23:llama-3-1-releases-licensed-405b-and-smaller-weights","event_type":"historical_material_change","title":"Llama 3.1 releases licensed 405B and smaller weights","summary":"Meta released Llama 3.1 weights including 405B, with 128K context and an updated custom license.","occurred_at":"2024-07-23T00:00:00.000Z","published_at":"2024-07-23T00:00:00.000Z","observed_at":"2026-10-09T19:12:47.000Z","reconstructed_at":"2026-10-09T19:12:47.000Z","ingest_type":"live_world_scan","locations":null,"status":"verified","confidence":0.97,"metadata":{"what_happened_at_time":"Meta released Llama 3.1 weights including 405B, with 128K context and an updated custom license.","what_must_not_be_inferred":"Meta's frontier-parity evaluation is an actor claim; accessible weights do not mean unrestricted open source.","availability_status":"released","affected_layers":["layer-models","layer-open-source","layer-software"],"epistemic_status":"observed_fact"},"created_at":"2026-10-10T07:49:15.909Z","updated_at":"2026-10-10T07:49:15.909Z"},"artifacts":[{"id":"art-2024q3-llama31","dedupe_key":"e11a3d5b211d5026d080f95b3610cee213778307b4b9398d5366d84a27e372f1","canonical_url":"https://ai.meta.com/blog/meta-llama-3-1/","evidence_locator":"","artifact_type":"official_announcement","title":"Llama 3.1 releases licensed 405B and smaller weights","summary":"Meta released Llama 3.1 weights including 405B, with 128K context and an updated custom license.","creator_entities":["Meta"],"released_at":"2024-07-23T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2024-Q3"},"created_at":"2026-10-10T07:49:15.901Z","updated_at":"2026-10-10T07:49:15.901Z","relation":"documented_by"}],"signals":[{"id":"sig-2024q3-models","statement":"Licensed open-weight scale, specialized families and restricted reasoning previews diversified model development; vendor parity claims remain unverified.","signal_type":"historical_layer_delta","direction":"increasing","confidence":0.93,"epistemic_status":"supported_inference","mapping_mode":"retrospective","reconstructed_at":"2026-10-09T19:12:47.000Z","created_at":"2026-10-10T07:49:15.914Z","updated_at":"2026-10-10T07:49:15.914Z"},{"id":"sig-2024q3-open-source","statement":"Downloadable model ecosystems expanded, while custom, noncommercial and permissive licenses remained materially different.","signal_type":"historical_layer_delta","direction":"increasing","confidence":0.93,"epistemic_status":"supported_inference","mapping_mode":"retrospective","reconstructed_at":"2026-10-09T19:12:47.000Z","created_at":"2026-10-10T07:49:15.915Z","updated_at":"2026-10-10T07:49:15.915Z"},{"id":"sig-2024q3-software","statement":"Source-linked search prototypes and deployable model/tool integrations broadened the software interface layer.","signal_type":"historical_layer_delta","direction":"increasing","confidence":0.93,"epistemic_status":"supported_inference","mapping_mode":"retrospective","reconstructed_at":"2026-10-09T19:12:47.000Z","created_at":"2026-10-10T07:49:15.915Z","updated_at":"2026-10-10T07:49:15.915Z"}]}