{"slug":"us-california-sb-53-transparency-report","id":"AIPT-OBL-0081","permanent_url":"https://aipolicytracker.org/id/AIPT-OBL-0081","title":"Frontier developers must publish a transparency report before deploying a new frontier model","short_title":"Transparency report","category":"transparency","summary":"Before or at the time a frontier developer deploys a new frontier model, or a substantially modified version, it must publish a transparency report on its website describing the model, its intended uses and restrictions, the release date and modalities, and how to contact the developer. A large frontier developer must add a summary of its catastrophic-risk assessment for the model, the results, any third-party evaluators involved and the steps taken under its frontier AI framework, with trade-secret and security redactions explained.\n","practical_action":"Attach a model-release transparency report to the launch checklist, with a redaction log for withheld details.\n","is_binding":true,"applies_from":"2026-01-01","section":null,"source_reference":"Business and Professions Code Section 22757.12 (as added by SB 53)","official_source_url":"https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260SB53","review_status":"verified","confidence_level":"medium","last_verified_at":"2026-09-26","reviewed_by":"Bhaskar Bhatt","actors":["provider","gpai_provider"],"sectors":["cross_sector"],"use_cases":["generative_ai"],"applicability":[{"description":"Frontier developers above the compute threshold; the catastrophic-risk elements apply to large frontier developers above the revenue threshold.","actors":["gpai_provider","provider"],"conditions":null}],"evidence_examples":[{"title":"Published model transparency report","description":null,"artifact_type":"document"},{"title":"Redaction justification log","description":null,"artifact_type":"record"}],"framework_mappings":[{"framework":"nist_ai_rmf","framework_name":"NIST AI RMF 1.0","reference":"GOVERN 4.2, MAP 5.1, MEASURE 2.6","note":"Public documentation of intended use and safety evaluation.","confidence_level":"medium","is_original":true},{"framework":"iso_42001","framework_name":"ISO/IEC 42001:2023","reference":"Annex A.8.2, A.8.3","note":"System documentation and external reporting.","confidence_level":"medium","is_original":true}],"controls":[{"slug":"frontier-model-safety-framework","title":"Frontier model safety and security framework","kind":"policy","relationship":"supports","note":"Report describes steps taken under the framework.","confidence_level":"medium","url":"https://aipolicytracker.org/controls/frontier-model-safety-framework"},{"slug":"model-release-and-change-management-gate","title":"Model release and change-management gate","kind":"process","relationship":"supports","note":"Release is gated on the report being published.","confidence_level":"high","url":"https://aipolicytracker.org/controls/model-release-and-change-management-gate"},{"slug":"technical-documentation-and-model-cards","title":"Technical documentation, model cards and instructions for use","kind":"process","relationship":"satisfies","note":"The model card content the report is built from.","confidence_level":"high","url":"https://aipolicytracker.org/controls/technical-documentation-and-model-cards"}],"url":"https://aipolicytracker.org/obligations/us-california-sb-53-transparency-report","policy":{"slug":"us-california-sb-53","title":"California SB 53: Transparency in Frontier Artificial Intelligence Act","status":"in_force","jurisdiction":"us-california","url":"https://aipolicytracker.org/policies/us-california-sb-53"}}