The EU AI Act now asks model makers to summarise their training data
Since 2 August 2025, providers of general-purpose AI models in the EU have had to publish a summary of the content used to train them.
EU AI Act milestones relevant to training dataEU AI Act (Regulation (EU) 2024/1689)
Why it matters
Developers must be able to say where data came from.
Clean, licensed sources are easier to describe than scraped ones.
Provenance becomes a selling point for data owners.
UK sellers
The Act applies to models placed on the EU market, so UK sellers licensing to global developers benefit from documented provenance and clear licence terms.
Key takeaways
Training transparency is now a legal duty in the EU.
Licensed data with clear provenance is favoured.
Document what you license and on what terms.
Sources
Regulation (EU) 2024/1689 (AI Act), Article 53 and implementation timeline
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