Annex XII AI Act
Transparency information referred to in Article 53 — for GPAI models
Official text
Transparency information referred to in Article 53(1), point (b) — technical documentation for providers of general-purpose AI models to downstream providers that integrate the model into their AI system The information referred to in Article 53(1), point (b) shall contain at least the following:
1. A general description of the general-purpose AI model including:
(a) the tasks that the model is intended to perform and the type and nature of AI systems into which it can be integrated;
(b) the acceptable use policies applicable;
(c) the date of release and methods of distribution;
(d) how the model interacts, or can be used to interact, with hardware or software that is not part of the model itself, where applicable;
(e) the versions of relevant software related to the use of the general-purpose AI model, where applicable;
(f) the architecture and number of parameters;
(g) the modality (e.g. text, image) and format of inputs and outputs;
(h) the licence for the model.
2. A description of the elements of the model and of the process for its development, including:
(a) the technical means (e.g. instructions for use, infrastructure, tools) required for the general-purpose AI model to be integrated into AI systems;
(b) the modality (e.g. text, image, etc.) and format of the inputs and outputs and their maximum size (e.g. context window length, etc.);
(c) information on the data used for training, testing and validation, where applicable, including the type and provenance of data and curation methodologies.
Source: EUR-Lex, Regulation (EU) 2024/1689 — text reproduced verbatim.
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SubscribeFrequently asked questions
What does Annex XII of the AI Act regulate?
Annex XII describes the transparency information that GPAI model providers must provide to downstream providers integrating the model into their AI systems, under Article 53(1)(b).
What is the difference between Annex XI and Annex XII?
Annex XI contains the full technical documentation for the provider itself. Annex XII contains the information that must be shared with downstream providers integrating the GPAI model into their own AI systems.
What information must I share with downstream providers?
Annex XII requires two main sections: (1) general model description (tasks, usage policies, release date, architecture, parameters, modalities, licence), and (2) description of integration means, input/output specifications and data information.
Do I need to document the maximum context size?
Yes, point 2b of Annex XII requires information on the modality and format of inputs and outputs, including their maximum size (such as context window length).
Is Annex XII relevant if I offer an open-source model?
Yes, Annex XII applies to all GPAI model providers making their model available to downstream providers, regardless of whether the model is open-source or proprietary. The transparency obligations of Article 53 apply broadly.
Do I need to share my training data with downstream providers?
Point 2c requires information about training, testing and validation data, including type, provenance and curation methods. You don't need to share the data itself, but must provide sufficient information about it.
How do I deliver the Annex XII information?
The AI Act does not prescribe a specific format. In practice, this is often done through model cards, technical documentation or API documentation provided with the model.
Do I need to state the model's licence?
Yes, point 1h of Annex XII explicitly requires that the licence for the model is stated in the transparency information for downstream providers.