{"event":{"id":"evt-sam-20230405","dedupe_key":"vision_foundation_model_release:2023-04-05:meta-releases-segment-anything","event_type":"vision_foundation_model_release","title":"Meta releases Segment Anything","summary":"SAM and SA-1B were released as a general segmentation research resource.","occurred_at":"2023-04-05T00:00:00.000Z","published_at":"2023-04-05T00:00:00.000Z","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":["Meta AI"],"affected_layers":["layer-models","layer-research","layer-open-source"],"change_kind":"open_multimodal_research_resource","what_happened_at_time":"SAM and SA-1B were released as a general segmentation research resource.","evidence_at_time":"The contemporaneous primary source 'Segment Anything' 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":"Segmentation is bounded vision capability, not general multimodal intelligence."},"created_at":"2026-10-07T14:04:48.590Z","updated_at":"2026-10-07T14:04:48.590Z"},"artifacts":[{"id":"art-sam-20230405","dedupe_key":"c4bd8ed2c99cdcfe617d2205c44d66ac6e1eb6bfc24e6aec41c7ebbf6acfd1b4","canonical_url":"https://ai.meta.com/blog/segment-anything-foundation-model-image-segmentation/","evidence_locator":"","artifact_type":"vision_foundation_model_release","title":"Segment Anything","summary":"SAM and SA-1B were released as a general segmentation research resource.","creator_entities":["Meta AI"],"released_at":"2023-04-05T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2023-Q2"},"created_at":"2026-10-07T14:04:48.583Z","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"}]}