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AI labels in the EU: what Article 50 means for adult sites

Since 2 August 2026, sites in the EU that show realistic AI-made images, video or audio of people must say so, under the AI Act (Art. 50(4)). Under the AI Act, AI chat characters must tell users they’re AI. Here’s what that means in practice, what a good label looks like, and how to check your site in a minute.

Summary of the official sources · checked 20 October 2026 · Not legal advice. · Sources at the end
Applies from2 August 2026
WhoSites showing realistic AI content to EU users
RuleAI Act Art. 50
Effort to fixOften 30–60 minutes

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In short
  • Realistic AI images, video or audio of people (“deepfakes”) need a clear label saying they’re AI-made.
  • Under the AI Act, AI chat characters must tell users they’re talking to an AI, unless that’s already obvious.
  • Clearly fictional or artistic content gets a lighter rule: a label is still needed, but it can be discreet and mustn’t spoil the content.
  • Show the label at the first moment someone sees or hears the content, not hidden in your terms.

Does this apply to your site?

Ask yourself these four questions. If one of these is a yes, Article 50 may apply to your site.

What regulators expect

  1. Label realistic AI content where it’s shown. A small badge on thumbnails, a note at the start of a video or audio, and a line in the title or description.
  2. Make AI chat obvious. The first message and the character’s profile say it’s an AI.
  3. Add a short AI notice page and link it from your footer: what you make with AI and how you label it.
  4. Keep consent records for any real person whose likeness or voice you use. That isn’t Article 50 itself, but it’s the first thing anyone will ask.

Machine-readable watermarks (C2PA and similar) are mainly the job of the AI tool’s maker. If you run your own generator, that part may apply to you too.

What a good label looks like

AI-generated

Thumbnail badge

Small, always visible, same place on every card.

This video was created with AI. All characters are fictional.

Start-of-video note

Two seconds before playback. Works for audio too, spoken.

Hi, I’m Mia, an AI character 💬AI chat · not a real person

Chat first message

The very first line says it, and a fixed label stays visible.

How No451 checks your site

We read your pages, sitemaps and media lists the way a visitor would. We look for the traces AI tools leave, then check whether a label sits next to that content. We never download or look at your images.

Should fixSigns of AI content, no label found Example result

4 file names start with ChatGPT-Image. 2 of them are visible on your home page before the age check, 2 are in your media sitemap. We found no AI label next to them.

The fix: add a badge to those thumbnails and an AI notice in your footer. Copy-paste snippet for WordPress included.

AI content labelsFile names, AI hosting, tags, captions
AI chat disclosureChat widgets and what they say first
“Undress” featuresTools that turn photos of real people into nudes

Common mistakes

Enforcement

Article 50 is enforced by the authorities each EU country names. Separately, since 6 February 2026, creating a sexual deepfake of an adult without consent, or asking someone else to create one, has been a criminal offence in England and Wales (SI 2026/31, commencing s. 138 of the Data (Use and Access) Act 2025); in the US, the TAKE IT DOWN Act makes knowingly publishing such images a crime. A label doesn’t make those legal. From 2 December 2026, Article 5(1)(ba) of the AI Act, added by Regulation (EU) 2026/1744 (checked 20 October 2026), prohibits AI systems that generate or manipulate realistic intimate images, video or audio of an identifiable person without that person’s explicit consent.

Questions operators ask

Do I need a label if all my performers are fictional AI characters?

Probably yes, but a lighter one. Article 50 asks for a disclosure for content that resembles real people and would falsely appear authentic. Whether wholly fictional AI performers count: the official sources don’t settle this yet. A discreet, always-visible “AI-generated” badge is a simple default and costs you almost nothing.

Does this apply if my company is outside the EU?

The rules are about content shown to people in the EU. If EU visitors can see your AI content, assume Article 50 matters for you, wherever your company sits.

Is AI retouching a deepfake?

Usually not. Light edits like colour correction or cropping don’t change what’s shown. Once AI changes who or what appears, or creates a realistic scene that didn’t happen, treat it as a deepfake and label it.

Can No451 prove my content isn’t AI?

No. We can’t tell whether a single image was made by AI. We find the traces AI tools leave, like file names, and whether a label sits next to them. If you tell us you publish AI content, we check more carefully.

Sources

Not legal advice. This page summarises and links to primary sources; it does not tell you what the law requires of your specific site. Related: DSA for adult sites · Glossary: deepfake · Fix guide: AI labels

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