{"event":{"id":"evt-2024q1-olmo","dedupe_key":"historical_material_change:2024-02-01:olmo-publishes-an-open-training-and-research-stack","event_type":"historical_material_change","title":"OLMo publishes an open training and research stack","summary":"Ai2 released OLMo weights alongside training data, training and evaluation code and intermediate checkpoints.","occurred_at":"2024-02-01T00:00:00.000Z","published_at":"2024-02-01T00:00:00.000Z","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":"Ai2 released OLMo weights alongside training data, training and evaluation code and intermediate checkpoints.","what_must_not_be_inferred":"Research reproducibility does not imply frontier parity or independently reproduced vendor performance.","availability_status":"released","affected_layers":["layer-open-source","layer-models","layer-research","layer-software"],"epistemic_status":"observed_fact"},"created_at":"2026-10-09T21:04:17.171Z","updated_at":"2026-10-09T21:04:17.171Z"},"artifacts":[{"id":"art-2024q1-olmo","dedupe_key":"b2a9abba359adc8617003013d0f726f221fa239f7500866a2f854658a7048b07","canonical_url":"https://allenai.org/blog/olmo-open-language-model-87ccfc95f580","evidence_locator":"","artifact_type":"official_announcement","title":"OLMo publishes an open training and research stack","summary":"Ai2 released OLMo weights alongside training data, training and evaluation code and intermediate checkpoints.","creator_entities":["Ai2"],"released_at":"2024-02-01T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2024-Q1"},"created_at":"2026-10-09T21:04:17.164Z","updated_at":"2026-10-09T21:04:17.164Z","relation":"documented_by"}],"signals":[{"id":"sig-2024q1-open-source","statement":"Open model development diversified between transparent OLMo training artifacts and Gemma's licensed weight distribution; these are distinct openness regimes.","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":"2026-10-09T21:04:17.178Z","updated_at":"2026-10-09T21:04:17.178Z"},{"id":"sig-2024q1-research","statement":"Research combined inspectable language-model training, generated interactive environments and instruction following across game interfaces; production autonomy and semantic state were not established.","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":"2026-10-09T21:04:17.179Z","updated_at":"2026-10-09T21:04:17.179Z"}]}