Guides · Article 50 · EU AI Act
What is an AI system?
Almost every Article 50 obligation turns on the phrase 'AI system', so it is worth orienting to what it points at. This guide gives a plain-language explanation. It is informational only and not legal advice. It is not the Act's formal definition — the Regulation defines 'AI system' precisely elsewhere — and whether a given piece of software qualifies is a fact-specific question for qualified counsel.
Why the term matters for Article 50
Article 50 hangs its duties on AI systems: providers must ensure AI systems that interact directly with people inform them they are dealing with an AI system (50(1)); providers of AI systems generating synthetic content must mark the outputs (50(2)); deployers of emotion-recognition or biometric-categorisation systems must inform exposed persons (50(3)); deployers of AI systems producing deepfakes must disclose them (50(4)). If something is not an 'AI system' in the Act's sense, these paragraphs do not attach to it — which is exactly why the threshold matters.
A plain-language orientation, not the definition
In everyday terms, people use 'AI system' for software that produces outputs like content, predictions, or classifications from data in ways that are not simple fixed rules. That intuition helps you spot candidates, but the Regulation sets out a specific definition with its own elements, and not every automated feature meets it. Treat the everyday sense as a way to build a shortlist of systems to examine, then confirm the actual classification with counsel.
How teams use the question in practice
Because the label decides whether Article 50 attaches, teams usually list their software features, flag the ones that look like candidates, and route the borderline cases to counsel rather than self-certifying either way. Our free scope check can give an informational read on which Article 50 paragraphs a candidate system might engage — it does not decide whether something is an 'AI system' in law.
Common questions
Is every piece of automation an 'AI system' under the EU AI Act?
No. The Regulation defines 'AI system' with specific elements, and not every automated or rules-based feature meets it. This guide is a plain-language orientation, not the Act's formal definition. Whether a given system qualifies is fact-specific — confirm with qualified counsel.
See what may apply to your business
Answer seven quick questions for an automated, informational indication of which Article 50 obligations appear likely to apply — free, and not legal advice.