Definition
European standards developed by CEN/CENELEC at the request of the European Commission. AI systems that comply with published harmonized standards receive a "presumption of conformity" with the EU AI Act, simplifying the conformity assessment. Example: EN 18286:2026 (quality management), in the Official Journal since 14 October 2026; prEN 18228 (risk management) and prEN 18283 (bias) are still drafts.