Building Article 50 compliance into your product?
Detect and flag AI-generated text, images, audio and video at scale via our API.
What is Article 50?
The EU AI Act (Regulation (EU) 2024/1689) entered into force on 1 August 2024 and phases in over several years. Article 50 sets out the “transparency obligations” — the rules that deal specifically with letting people know when they are interacting with, or looking at, AI-generated content. These obligations become applicable on 2 August 2026, so for most organisations this is the first part of the Act with a near-term, content-level impact.
Article 50 splits its duties between two groups: providers (those who develop or place an AI system on the market) and deployers (those who use an AI system in a professional capacity). Both have separate obligations, and most companies will be deployers.
What it actually requires
Art. 50(1) — Tell people they're talking to an AI
Providers of AI systems that interact directly with people (chatbots, voice agents) must design them so users are informed they are dealing with an AI — unless that is already obvious to a reasonably well-informed person.
Art. 50(2) — Mark synthetic output (machine-readable)
Providers of AI that generates synthetic audio, image, video or text must ensure outputs are marked in a machine-readable format and detectable as artificially generated or manipulated. The technical solution has to be effective, interoperable, robust and reliable “as far as is technically feasible” — this is the legal hook behind watermarking schemes like SynthID and C2PA.
Art. 50(4) — Disclose deepfakes and AI-written public-interest text
Deployers who generate or manipulate image, audio or video that is a deep fake must disclose that the content is artificially generated or manipulated. The same applies to AI-generated text published to inform the public on matters of public interest — unless it went through human editorial review with a person or organisation holding editorial responsibility. Limited exceptions exist for law enforcement and for artistic or satirical works.
Penalty for non-compliance
Breaches of Article 50 can be fined up to €15 million or 3% of total worldwide annual turnover, whichever is higher (Article 99).
The road to August 2026
The AI Act phases in over several years. Article 50 is the transparency milestone that lands next:
AI Act enters into force
The regulation becomes law; the phased rollout clock starts.
GPAI rules apply
Transparency duties for general-purpose AI models begin.
Article 50 applies
Marking and disclosure of AI-generated content become enforceable.
High-risk rules apply
Full obligations for high-risk AI systems take effect.
Why marking alone won't be enough
Article 50(2) puts the marking duty on the provider of the generative model. In a clean world, every piece of AI content would carry a robust, machine-readable watermark and compliance would be trivial. In practice, the marking layer has structural gaps that every deployer inherits:
- Watermarks can be stripped or degraded. Re-encoding, cropping, paraphrasing, screenshotting and format conversion can weaken or remove a mark — and text watermarks are the most fragile of all.
- Not every generator complies. Open-source models, self-hosted models, and providers outside the EU may emit unmarked content. There is no mark to read.
- Marks are not interoperable yet. A patchwork of schemes (SynthID, C2PA, vendor-specific) means “no mark found” does not equal “not AI”.
- Deployers carry their own duty. Art. 50(4) disclosure is on the deployer. You cannot discharge it by assuming the provider marked everything upstream.
This is why independent detection becomes the compliance backstop. Where a watermark exists, you verify it; where one is missing or stripped, model-based detection still estimates whether content is AI-generated — so deployers can meet their 50(4) disclosure duty on content the upstream mark never covered. The EU AI Act itself anticipates this: Article 50(7) tasks the AI Office with encouraging codes of practice for the detection and labelling of artificially generated content. You can check a single piece of content against SynthID and other AI signals with our free SynthID detector, or automate it across your pipeline with the detection API.
Who needs to act
If your organisation publishes, hosts, moderates or relies on user- or AI-generated content for the EU market, Article 50 likely touches you as a deployer. The clearest exposure:
Platforms & marketplaces
UGC, listings, reviews and profiles — deepfake and AI-text disclosure at scale.
Publishers & media
AI-assisted articles on public-interest topics fall under the 50(4) text rule.
Financial services & insurance
AI-generated documents, statements and imagery in KYC, claims and fraud workflows.
HR, education & government
AI-written submissions, applications and records where provenance must be auditable.
How detection fits into a compliance pipeline
The practical pattern most teams land on is to add a detection step to existing content intake and moderation flows, rather than treating compliance as a manual review task:
Check provenance
Read any C2PA / SynthID signal that is present.
Detect the rest
Model-based detection on unmarked text, image, audio & video.
Apply disclosure
Flag deepfakes & public-interest AI text for the required label.
Keep an audit trail
Log scores & decisions to show good-faith compliance.
This is exactly the kind of step that belongs in an API, not a dashboard. Our detection API returns an AI-likelihood result for text, images, audio and video in seconds, so the check can run automatically inside your pipeline at the moment content arrives.
Get ahead of the August 2026 deadline
Integrate AI-content detection into your moderation, intake or compliance workflow. Full API access, bulk processing, and volume pricing for teams.
Not legal advice. This article summarises Article 50 of the EU AI Act for general information as of June 2026. The Act's implementation, guidance from the AI Office, and codes of practice are still evolving. Confirm your specific obligations with qualified legal counsel.
Frequently asked questions
When does EU AI Act Article 50 apply?
The transparency obligations in Article 50 apply from 2 August 2026 — 24 months after the EU AI Act entered into force on 1 August 2024.
What does Article 50 of the EU AI Act require?
Providers must mark AI-generated audio, image, video and text in a machine-readable, detectable way, and tell users when they are interacting with an AI. Deployers must disclose deepfakes and AI-generated text published on matters of public interest.
Do I have to label AI-generated content?
If you are a deployer placing deepfakes or AI-written public-interest text in front of EU users, yes — you must disclose that it is artificially generated or manipulated, with limited exceptions for human-reviewed editorial content and artistic works.
What are the penalties for non-compliance?
Breaches of Article 50 can be fined up to €15 million or 3% of total worldwide annual turnover, whichever is higher, under Article 99 of the EU AI Act.
Does a watermark make my content compliant?
Not on its own. Marking is the provider’s duty, but watermarks can be stripped or missing, and the disclosure duty under Article 50(4) sits with the deployer. Independent detection is used to verify marks and catch unmarked AI content.