Understand how model-provider duties differ from obligations concerning downstream AI systems.
Model versus system
A general-purpose model can be integrated into many different systems. A downstream application may have additional obligations depending on its intended purpose and deployment.
Provider obligations
The Act includes obligations concerning technical documentation, information for downstream providers, copyright policy and a public summary of training content. Additional duties apply to models with systemic risk. Consult Chapter V for scope and detail.
Official Commission overview ↗Application
The main GPAI model provisions began applying on 2 August 2025. Transitional conditions may matter for models already on the market; review the official material before drawing conclusions.
Why the model and system distinction matters
A general-purpose AI model is designed for broad use and can be integrated into multiple downstream systems. A customer-facing application built with that model has its own intended purpose and may need a separate system classification. The model provider’s Chapter V duties do not automatically transfer wholesale to an integrator, and a downstream provider cannot assume the model’s documentation resolves the system’s specific obligations.
Start with the system overview ↗The Article 53 information flow
The provision addresses technical documentation for authorities, information for downstream system providers, a policy to comply with Union copyright law and a sufficiently detailed public summary of training content. This is not a requirement to publish every training item. A downstream team should request the information needed to understand capabilities and limitations and to assess its own deployment.
Read Article 53 ↗When systemic risk changes the duties
General-purpose AI models classified as presenting systemic risk face additional obligations under Article 55, including model evaluation, assessment and mitigation of systemic risks, serious-incident tracking and cybersecurity protection. The applicable classification and notification rules require a model-specific review. A broad description such as “large model” is not itself a complete legal assessment.
Read Article 55 ↗Open release and older models
Certain free and open-source models may benefit from limited exceptions to some Article 53 documentation and information duties, but the copyright-policy and training-summary duties remain relevant, and systemic-risk models are treated differently. Transitional arrangements also apply to models placed on the market before 2 August 2025. Check Article 111 and current official guidance before assuming an exemption or deadline.
Review the implementation timeline ↗This guide is an orientation, not a legal determination. Check the current legal text and official implementation guidance for your system.
Read the AI Act ↗European Commission overview ↗