# EU AI Act transparency rules take effect August 2, 2026

> A concrete piece of the EU AI Act comes into force on August 2, and it targets something ordinary users will actually notice. Under Article 50, interactive AI systems like chatbots and assistants must tell people they are talking to a machine, and generative systems must mark their output as artificially created in a machine-readable format so it can be detected downstream. The rollout is staggered. New systems face the obligations first, with a partial delay to December 2 for services already running, and a forthcoming Code of Practice will spell out how to label text, images, audio and video in practice. That machine-readable requirement is the interesting part, because it pushes toward invisible watermarks and metadata that other software can check, not just a visible disclaimer a user might ignore. For companies deploying AI in Europe, this is the point where transparency stops being a nice-to-have and becomes compliance. For everyone else, it is an early test of whether disclosure rules can keep pace with content that is getting harder to tell apart from the real thing. The gap between the legal text and the technical reality is where the next few months will get interesting.

_Section: [Daily AI Updates](https://www.wortins.com/daily-ai) · Source: Sidley · Published Saturday, July 18, 2026_

## Wortins' read

A concrete piece of the EU AI Act comes into force on August 2, and it targets something ordinary users will actually notice. Under Article 50, interactive AI systems like chatbots and assistants must tell people they are talking to a machine, and generative systems must mark their output as artificially created in a machine-readable format so it can be detected downstream. The rollout is staggered. New systems face the obligations first, with a partial delay to December 2 for services already running, and a forthcoming Code of Practice will spell out how to label text, images, audio and video in practice. That machine-readable requirement is the interesting part, because it pushes toward invisible watermarks and metadata that other software can check, not just a visible disclaimer a user might ignore. For companies deploying AI in Europe, this is the point where transparency stops being a nice-to-have and becomes compliance. For everyone else, it is an early test of whether disclosure rules can keep pace with content that is getting harder to tell apart from the real thing. The gap between the legal text and the technical reality is where the next few months will get interesting.

## Source

[Read the full story at Sidley](https://datamatters.sidley.com/2026/06/24/eu-ai-act-transparency-obligations-preparing-for-compliance-by-2-august-2026/)

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