EU AI Act Enters New Enforcement Phase With Mandatory Disclosure Rules for AI-Generated Content

The European Union's AI Act entered a new enforcement phase in September 2026, requiring companies to clearly label AI-generated content and meet new transparency standards.

The rules apply to companies that produce or distribute AI-generated text, images, audio, and video. Under the new requirements, content created by AI systems must be disclosed as such, giving consumers and businesses the ability to know when they are interacting with machine-generated material.

The AI Act was passed by the European Parliament in 2024 and has been rolling out in phases since then. The transparency and disclosure requirements that took effect in September 2026 are among the most visible provisions for everyday users of AI tools.

Marketing professionals, media companies, and technology platforms operating in the EU are now required to implement disclosure mechanisms. The rules apply to companies based outside the EU if their AI-generated content reaches European users.

Analysts say the EU rules are likely to influence AI governance standards in other countries, similar to how the EU's General Data Protection Regulation shaped global data privacy practices after its introduction in 2018.

In the United States, the G20 nations endorsed the "Carolina Principles" at a summit in Chapel Hill, North Carolina, in September 2026. Those principles favor targeted, sector-specific AI regulation rather than a single sweeping law, a different approach from the EU's more comprehensive framework.

The EU AI Act also includes provisions for high-risk AI systems used in areas like healthcare, education, and law enforcement, with stricter requirements for those applications.