{"artifact":{"id":"art-2025q3-metr-rct","dedupe_key":"f1d695185704392583894cf8956ad34939c7a25da03082a15204a05b82037924","canonical_url":"https://metr.org/blog/2025-07-10-early-2025-ai-experienced-os-dev-study/","evidence_locator":"","artifact_type":"research_report","title":"METR publishes experienced-developer productivity experiment","summary":"A randomized study of sixteen experienced developers reports slower completion with early-2025 AI tools on their own repositories.","creator_entities":["METR"],"released_at":"2025-07-10T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2025-Q3","availability_status":"published_empirical_study"},"created_at":"2026-10-10T08:31:22.769Z","updated_at":"2026-10-10T08:31:22.769Z"},"sources":[{"id":"src-2025q3-metr-rct","dedupe_key":"f4cf75c6a69f28c22e46a3621f6ff49574f8833ea8f4f2cf6defca48b10445ae","name":"METR publishes experienced-developer productivity experiment","publisher":"METR","url":"https://metr.org/blog/2025-07-10-early-2025-ai-experienced-os-dev-study/","evidence_locator":"","source_type":"official_announcement","primary_or_secondary":"primary","retrieved_at":"2026-10-10T06:24:42.000Z","published_at":"2025-07-10T00:00:00.000Z","author":null,"metadata":{"time_precision":"day","historical_scope":"2025-Q3","evidence_locator":"Dated article body or explicitly dated release-note entry; exclude navigation and later updates.","retrieval_reference":"turn13view8","publication_date_basis":"Dated primary publication or dated release-note entry"},"created_at":"2026-10-10T08:31:22.757Z","updated_at":"2026-10-10T08:31:22.757Z"}]}