{"event":{"id":"evt-pc26q1-0e424a4f0e24","dedupe_key":"historical_publication_milestone:2026-01-29:metr-publishes-time-horizon-1-1-measurement-update","event_type":"historical_publication_milestone","title":"METR publishes Time Horizon 1.1 measurement update","summary":"On 29 January 2026 METR released Time Horizon 1.1, updating agent task evaluation and estimates. This is a research methodology milestone, not evidence that model capability itself rose at publication.","occurred_at":"2026-01-29T00:00:00.000Z","published_at":"2026-01-29T00:00:00.000Z","observed_at":"2026-10-14T14:30:00.000Z","reconstructed_at":"2026-10-14T14:30:00.000Z","ingest_type":"historical_backfill","locations":null,"status":"verified","confidence":0.97,"metadata":{"rts_finding_id":"rts_finding_873d480c491542fbb0b30e424a4f0e24","rts_handoff_id":"rts_handoff_e8b8dcd90fee4e2faace514d6bc72d77","scope":"historical_evidence_only","temporal_caveats":"research method revision not capability onset","owner_authorized":"preparation_and_validation_only","semantic_reconciliation":"pending","new_relation_onset":0,"canonical_compare_ids":["evt-2025q3-metr-rct"],"existing_relation_ids":["rel-models-research-2022q3"],"source_claims_not_independent_deployment":1},"created_at":"2026-10-14T15:28:47.862Z","updated_at":"2026-10-14T15:28:47.862Z"},"artifacts":[{"id":"art-pc26q1-0e424a4f0e24-1","dedupe_key":"2546d2264e50ee2a1800177b9f1fa47d7c291e12fbefe1bc96cf6e4ff9c8d197","canonical_url":"https://metr.org/blog/2026-1-29-time-horizon-1-1","evidence_locator":"","artifact_type":"dated_publication_or_supporting_document","title":"METR Time Horizon 1.1","summary":"Historical reference supporting METR publishes Time Horizon 1.1 measurement update","creator_entities":["METR"],"released_at":"2026-01-29T00:00:00.000Z","content_hash":null,"metadata":{"rts_finding_id":"rts_finding_873d480c491542fbb0b30e424a4f0e24","retrospective_source_postdates_event":0},"created_at":"2026-10-14T15:28:47.849Z","updated_at":"2026-10-14T15:28:47.849Z","relation":"evidenced_by"}],"signals":[]}