The European Union will start enforcing its landmark Artificial Intelligence Act from Sunday, giving the bloc authority to oversee compliance and impose penalties on companies that break the rules. The AI Act, adopted by the EU in 2024, is implemented in phases rather than all at once. As those staged provisions come into effect, regulators gain broader capability to take enforcement action, including the ability to fine non-compliant firms. Reporting across outlets describes the same transition: the shift from adoption to enforcement for key requirements under the AI Act begins this week. The changes are part of a wider framework intended to regulate AI systems across the EU, with enforcement mechanisms coming online as specific obligations enter their effective dates. Overall, the sources agree that Sunday marks a meaningful step in the implementation timeline, moving from the law being passed to it being actively applied through regulatory action.