{"event":{"id":"evt-hist-20260928-openai-safety-cases-guidelines","dedupe_key":"frontier_training_safety_guidelines_publication:2026-09-28:openai-publishes-guidance-towards-safety-cases-for-frontier-rl-training","event_type":"frontier_training_safety_guidelines_publication","title":"OpenAI publishes guidance towards safety cases for frontier RL training","summary":"OpenAI published September 28, 2026 preliminary recommendations for structured safety documentation before frontier reinforcement-learning training runs. Safety cases are described as aspirational and operational implementation is evolving; not evidence of universal mandatory enforcement or completed safety-case certification.","occurred_at":"2026-09-28T00:00:00.000Z","published_at":"2026-09-28T00:00:00.000Z","observed_at":"2026-10-18T06:11:00.000Z","reconstructed_at":"2026-10-18T06:11:00.000Z","ingest_type":"historical_backfill","locations":null,"status":"verified","confidence":0.92,"metadata":{"bounded_canonical_search":1,"date_precision":"day","evidence_only":1,"external_postcutoff_id":"2026-09-28-openai-safety-cases-frontier-training","global_novelty_not_proven":1,"realized_outcomes_not_inferred":1},"created_at":"2026-10-18T06:52:53.327Z","updated_at":"2026-10-18T06:52:53.327Z"},"artifacts":[{"id":"art-hist-20260928-openai-safety-cases-guidelines","dedupe_key":"dbb75a683dcf9e6fa66a40beec37c3e6b31485e7aac059f1b1f2a41d118a61d1","canonical_url":"https://openai.com/index/towards-safety-cases-for-frontier-ai-training/","evidence_locator":"","artifact_type":"first_party_publication","title":"OpenAI publishes guidance towards safety cases for frontier RL training","summary":"","creator_entities":[],"released_at":"2026-09-28T00:00:00.000Z","content_hash":null,"metadata":[],"created_at":"2026-10-18T06:52:53.326Z","updated_at":"2026-10-18T06:52:53.326Z","relation":"documented_by"}],"signals":[]}