{"event":{"id":"evt-mpt7b-20230505","dedupe_key":"open_foundation_model_release:2023-05-05:mosaicml-releases-mpt-7b","event_type":"open_foundation_model_release","title":"MosaicML releases MPT-7B","summary":"A commercially usable open-source 7B foundation-model family.","occurred_at":"2023-05-05T00:00:00.000Z","published_at":"2023-05-05T00:00:00.000Z","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":["MosaicML"],"affected_layers":["layer-open-source","layer-models","layer-research","layer-software"],"change_kind":"open_foundation_stack_maturation","what_happened_at_time":"A commercially usable open-source 7B foundation-model family.","evidence_at_time":"The contemporaneous primary source 'Introducing MPT-7B: A New Standard for Open-Source, Commercially Usable LLMs' 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":"Open licensing does not establish frontier parity."},"created_at":"2026-10-07T14:04:48.596Z","updated_at":"2026-10-07T14:04:48.596Z"},"artifacts":[{"id":"art-mpt7b-20230505","dedupe_key":"612d71f8730ef2999a6badcd0d8b07ba6257b65bc6786f38c7454e961dd18d05","canonical_url":"https://www.databricks.com/blog/mpt-7b","evidence_locator":"","artifact_type":"open_foundation_model_release","title":"MPT-7B","summary":"A commercially usable open-source 7B foundation-model family.","creator_entities":["MosaicML"],"released_at":"2023-05-05T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2023-Q2"},"created_at":"2026-10-07T14:04:48.586Z","updated_at":"2026-10-07T16:27:14.256Z","relation":"evidenced_by"}],"signals":[{"id":"sig-q2-open-foundation-stack","statement":"Open training data, commercially usable model weights and multiple independent foundation-model families formed a more complete reproducible/open alternative model-development stack.","signal_type":"open_foundation_stack_maturation","direction":"increasing","confidence":0.97,"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"}]}