The AI Act Duty That Applies Regardless of Risk Tier
Almost every obligation in the AI Act is keyed to a risk classification. Work out which tier a system falls into and the duties follow. Article 4 is not. It applies to providers and deployers of any AI system whatever it does, its subject is people rather than systems, and national authorities began supervising and enforcing it from 2 August 2026 while the high-risk regime moved to December 2027. It is the live one, and it sits outside the structure most governance programs are built on.