EU AI Act Transparency Rules Now in Force, Requiring Chatbot Disclosures
Key transparency requirements under the European Union's AI Act took effect on August 2, 2026, requiring chatbots and interactive AI systems to inform users they are communicating with an AI. Generative AI content must also be labeled as machine-generated. Companies that fail to comply face fines of up to 15 million euros or 3 percent of worldwide annual turnover.
Key transparency requirements under the European Union's AI Act took effect on August 2, 2026, requiring providers of chatbots and other interactive AI systems to clearly inform users they are communicating with an artificial intelligence rather than a human.
Under Article 50 of the AI Act, the disclosure must occur no later than the first interaction. The requirement applies to all such systems regardless of whether they are classified as high-risk. Exceptions exist only where it is obvious to a reasonably well-informed person that they are interacting with AI, or in specific contexts involving criminal investigations.
The new rules also impose strict requirements on AI-generated or altered content. Providers of generative AI systems must ensure that outputs are marked in a machine-readable format to facilitate automatic detection. Any AI-generated or manipulated image, audio, or video content that appears authentic must be labeled as such. If a deployer publishes AI-generated text to inform the public on matters of public interest, they must disclose its artificial origin, unless the content has undergone substantive human review and editorial responsibility.
The European Commission's AI Office and national authorities have moved into the operational enforcement phase. The AI Office launched a complaints tool for users and organizations, as well as an anonymous whistleblower tool for professionals to report systemic issues or violations.
Non-compliance carries significant financial risk. Organizations may face fines of up to 15 million euros or 3 percent of their worldwide annual turnover, whichever is higher.
A voluntary Code of Practice on the transparency of AI-generated content provides practical benchmarks for marking and labeling. While voluntary, it serves as a primary framework for demonstrating compliance.
Other parts of the AI Act follow different timelines. Prohibitions on AI systems that generate non-consensual sexually explicit content are set to become enforceable on December 2, 2026.
