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AI Act (EU)

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Regulation (EU) 2024/1689, the EU's horizontal, risk-tiered law for AI, amended by the Digital Omnibus 1. It classifies systems by risk (prohibited, high-risk, limited, minimal) and imposes obligations accordingly.

Developed in
ch. 18, The Act and the Omnibus
Chapters
ch. 08, Regulatory Map · ch. 18, EU AI Act
Compared side by side
ISO 42001 vs EU AI Act · NIST AI RMF vs EU AI Act
Source
1 numbered reference, listed below

Where it is used

23 chapters of the Body of Knowledge use the term. Each link opens the first section that does.

Patterns that use this term

33 pattern pages use the term; the 10 that use it most:

  • Digital Omnibus

    The 2026 reform package amending the EU AI Act (in force 27 Jul 2026), which adjusted the high-risk timeline, added AI Office investigation powers and…

  • Small mid-cap enterprise (SMC)

    An enterprise that has outgrown the SME definition but falls within the EU small mid-cap definition.

  • Training, validation and testing data

    The three data sets the AI Act defines for high-risk systems: training data fits the model, validation data tunes it and guards against overfitting, and…

  • Testing in real-world conditions

    Under the EU AI Act, temporary testing of an AI system for its intended purpose outside a laboratory, under a plan approved by the market surveillance…

  • Classification decision record

    A versioned registry record of why a system sits on a given rung of the AI Act risk ladder: the Annex III point, any Article 6(3) condition relied on, an…

  • Market surveillance authority

    The national authority designated to enforce the AI Act for products placed on its market, with powers to investigate, demand documentation and require…

  • EU declaration of conformity

    The provider's signed statement, following AI Act Annex V, that a high-risk AI system meets the Act's requirements; drawn up after the conformity assessment…

  • Authorised representative

    Under the EU AI Act, a person established in the Union with a written mandate from a non-EU provider of a high-risk AI system or general-purpose AI model to…

Sources

  1. [1] Regulation (EU) 2024/1689 (AI Act), consolidated text as amended by Regulation (EU) 2026/1744 (Digital Omnibus on AI, in force 27 Jul 2026; definitions in Art. 3, incl. 3(1), 3(3) to 3(14), 3(14b), 3(20), 3(22), 3(23), 3(29) to 3(32), 3(49), 3(55) to 3(57), 3(60), 3(61), 3(63), 3(68); Arts. 4, 5, 6 (incl. 6(3) third subparagraph, profiling), 9, 10, 11, 13, 14, 15, 17, 22 to 27 (incl. 26(11)), 40, 41, 43, 47, 48, 50, 53 (incl. 53(1)(c)), 55, 57, 60, 72, 73, 86; Annexes I, III, IV). Publications Office of the EU (EUR-Lex). 2026-07-27. https://eur-lex.europa.eu/eli/reg/2024/1689/2026-07-27/eng (verified: primary)

Definitions of legal terms paraphrase the cited text, which governs. Dated statements are as of .

Cite this term

García Aibar, J. (2026). AI Act (EU). In AI Governance Engineering: The Thesis & Body of Knowledge (v0.5.0), Glossary. https://doi.org/10.5281/zenodo.22956197. https://aigovernanceengineer.com/glossary/ai-act-eu. CC BY 4.0

BibTeX

@misc{aige2026aiacteu,
  author  = {Jorge García Aibar},
  title   = {{AI Act (EU)}},
  note    = {Glossary, AI Governance Engineering: The Thesis \& Body of Knowledge, version 0.5.0},
  year    = {2026},
  doi     = {10.5281/zenodo.22956197},
  url     = {https://aigovernanceengineer.com/glossary/ai-act-eu}
}