EU AI Act vs GDPR: what's the difference?
GDPR regulates the processing of personal data; the EU AI Act regulates AI systems themselves, classifying them by risk. GDPR is about data, the AI Act is about the AI system and what it does. The AI Act doesn't replace GDPR — it sits alongside it, and most AI projects that use personal data are subject to both.
General information for buyers, not legal advice. Confirm your obligations with qualified counsel.
Side by side
| GDPR | EU AI Act | |
|---|---|---|
| What it regulates | Processing of personal data. | AI systems and their risks. |
| Core question | Is personal data handled lawfully and safely? | Is this AI system's risk managed and documented? |
| Triggers when | You process personal data. | You provide or deploy an AI system. |
| Structured by | Principles (lawful basis, minimisation, rights). | Risk tiers (prohibited, high, limited, minimal). |
| Key document | Data processing agreement (DPA). | Technical documentation, instructions for use. |
| Your role | Controller or processor. | Provider or deployer. |
How they work together
Think of GDPR and the AI Act as two lenses on the same project: one on the data, one on the system. A compliant AI project satisfies both. For the buyer's view of each, see what the EU AI Act means when you're buying AI and how to make sure your AI agency is GDPR compliant. To gauge your AI Act exposure, see is your AI use case high-risk.
Agencies fluent in both
NorthBridge AI is built for European buyers, so agencies understand both regimes and each engagement documents data and AI-system responsibilities in the Statement of Work. See how it works.
Frequently asked questions
What's the difference between the EU AI Act and GDPR?
GDPR regulates the processing of personal data — how it's collected, used, stored and protected. The EU AI Act regulates AI systems themselves, classifying them by risk and imposing obligations that scale with that risk. GDPR is about data; the AI Act is about the AI system and what it does. Most AI projects involving personal data are subject to both, and they need to be handled together. This is general information, not legal advice.
Does the EU AI Act replace GDPR?
No. The EU AI Act sits alongside GDPR, not on top of it. GDPR continues to govern personal data; the AI Act adds a separate layer of obligations about the AI system and its risk category. Complying with one does not mean you've complied with the other — a project can meet GDPR and still carry AI Act obligations, and vice versa.
Do both apply when I hire an AI agency?
Usually, yes, if the system uses personal data. GDPR applies to how that data is processed, and the AI Act applies to the AI system and your role as a deployer. Address both in the same Statement of Work — data-handling and lawful basis for GDPR, and risk classification, documentation and transparency for the AI Act.
Hire agencies that know both regimes
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