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European Union

EU AI Act machine-readable labelling: voluntary code in development; studies favour multi-layered marking, potential centralised verifier, and warn of interoperability issues ahead of August 2026 obligations

Published on: 02 September 2025

Published by an LexisNexis EU Law expert
Legal News
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Article summary

From 2 August 2026, the EU’s landmark AI Act will require firms such as OpenAI, Google and Meta to apply machine-readable labels to material produced by ChatGPT, Gemini and similar systems, indicating whether content is machine-generated or has been manipulated. The legislation also charges the European Commission with guiding the development of a voluntary code of practice to support the effective roll-out of this labelling duty. Early groundwork for the code has been laid through expert studies examining technical methods to mark content by type.

Preparatory studies

At a technical workshop on 4 September 2025, AI companies, experts and other stakeholders will be shown the preliminary findings from these studies. The text study was overseen by Giovanni Puccetti, associate professor at the University of Milan; the audio work was led by Xavier Serra and Martin Rocamore, professors at Barcelona’s University Pompeu Fabra; and the image and video study was coordinated by Mario Fritz, a professor at research centre CISPA...

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