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High-Risk AI Systems Under the EU AI Act

How a system gets classified as high-risk under Annex III or Annex I, the substantive Chapter III Section 2 obligations that follow, and the confirmed application dates now that the Digital Omnibus has moved them.

EU AI Act — Risk Tier Overview
UNACCEPTABLE
Prohibited
Art. 5
HIGH RISK
Annex I + III
Art. 6–49
LIMITED RISK
Transparency
Art. 50
MINIMAL
Voluntary
No mandate
A conveyor belt of sealed shipping crates passing through a customs checkpoint gate, evoking the pre-market conformity gate that high-risk AI systems must clear before reaching the EU market.

Builds on AR-000200 (The EU AI Act Explained) for shared vocabulary — provider/deployer definitions and the four-tier risk structure are not re-derived here. Article 14 (human oversight), one of the six substantive requirements below, is covered in depth in AR-000142 and only summarised here.

Executive summary

What this means

Who this applies to

Regulatory context

Requirements

What organizations must do

  • Confirm the system is an "AI system" within Article 3(1) at all before doing anything else.
  • Run the Article 6 classification test against both the Annex I product-safety track and the Annex III use-case track.
  • If Annex III applies, check whether the narrow Article 6(3) derogation removes the system from high-risk status — remembering profiling always overrides the derogation.
  • For any system that remains high-risk, begin work against all six Chapter III Section 2 pillars together — they are cumulative, not alternative, requirements.
  • If relying on the Article 6(3) derogation, document that assessment before market placement — Article 6(4) makes this a legal requirement, not a best practice.
  • Start the classification exercise well ahead of the 2 December 2027 (Annex III) or 2 August 2028 (Annex I) deadlines — classification alone can be genuinely difficult at the margins.

Common mistakes

Treating the Annex I and Annex III tracks as mutually exclusive is a common error — a system embedded in Annex-I-covered machinery that is also used for one of the Annex III purposes can be caught by both tracks, each with its own conformity-assessment mechanics.

Relying on the Article 6(3) derogation without documenting the assessment is a second common mistake — Article 6(4) makes the documentation itself a legal requirement, and an undocumented "not high-risk" call carries the same registration exposure as an undocumented high-risk one.

Assuming the Article 6(3) derogation is available whenever a system merely "assists" a human decision is a third mistake worth flagging — the derogation's own text preserves high-risk status wherever the system performs profiling, and the "narrow procedural task" and "improves the result of a previously completed human activity" categories are narrower in practice than they may sound, since Commission guidance is intended to clarify exactly where that line sits.

Open questions

  • Whether the Digital Omnibus changed the substance of Article 6's classification mechanics or the Annex I legislation list, beyond the dates. The AI Act Service Desk's own pages for Article 6 and Annex I carry the same Commission disclaimer seen in AR-000200 for Article 3: both provisions have "been amended by the Digital Omnibus on AI" and the displayed text "has not yet been updated to reflect those amendments." This article cites the pre-Omnibus text, cross-checked against the Omnibus's own confirmed effect on application dates — but whether the substance changed beyond the dates is unconfirmed.
  • Whether the Commission met its Article 6(5) statutory deadline (2 February 2026) for high-risk classification guidelines. Not independently confirmed against a primary Commission source on this research pass.
  • Where the practical boundary of the Article 6(3) derogation categories sits — particularly "narrow procedural task" and "improves the result of a previously completed human activity" — pending the Article 6(5) guidelines' worked examples.

Frequently asked

FAQ
Did the Digital Omnibus change the substance of the Article 6 classification test, or only the application dates?
Not yet confirmed — the Commission's own AI Act Service Desk states Article 6 has been amended but that its page has not yet been updated to reflect the changes.
FAQ
Has the Commission published final Article 6(5) classification guidelines, and did it meet the 2 February 2026 statutory deadline?
Not independently confirmed against a primary Commission source as of this article's verification date.
FAQ
Where exactly does the Article 6(3) derogation's "narrow procedural task" boundary sit in practice?
Not yet settled pending the Article 6(5) guidelines' worked examples.

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