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EU AI Act Article 53: obligations for providers of general-purpose AI models

Article 53 obligations apply from 2 August 2025 to providers of general-purpose AI models (GPAI) — the large models integrated into countless downstream applications, not the deployed AI systems built on top of them.

What Article 53 requires

• Technical documentation (Annex XI), kept up to date, made available to the AI Office and national authorities on request.
• Information and documentation for downstream providers who integrate the model into their own AI system (Annex XII), so they understand its capabilities and limitations.
• A policy to comply with EU copyright law, including identifying and honouring rights reservations.
• A publicly available, sufficiently detailed summary of the content used to train the model, using a template provided by the AI Office.

Who it applies to

Providers of GPAI models placed on the EU market, regardless of where the provider is established (see our Article 2 scope guide). Models released under a free and open-source licence with publicly available parameters are exempt from the documentation and downstream-information duties, unless the model presents systemic risk under Article 55 — the copyright policy and training-data summary still apply even to open models.

What evidence this implies

Not model logs but a documentation trail: version history of the technical documentation, records of what was shared with which downstream integrator and when, and a dated publication of the training-data summary.

The gap Vetro does not close

Article 53 is about pre-deployment documentation of the model itself. It says nothing about how a downstream deployer's agent actually behaves in production — that is Article 26 and Article 12 territory, covered in our deployer obligations guide.

How Vetro helps

Vetro does not produce Annex XI/XII documentation, but if you are a downstream integrator relying on a GPAI provider's model, Vetro's hash-chained, ed25519-signed ledger records the calls your agent actually made against that model. Vetro Attest verifies a ledger or OpenTelemetry GenAI trace for free and, for 29 USD, issues a counter-signed report mapping your evidence to the Act. This is technical evidence, not legal advice.

See a sample ledger verified in one click, check your own logs free or get the countersigned EU AI Act report.