The new date
The high-risk rules from Chapter III, Sections 1 to 3, apply to systems from Annex III from 2 December 2027 [1]. Without that amendment they applied from the general date of application, 2 August 2026 [2].
Systems you already use
If a high-risk system was already on the market or in use before that date, the Regulation applies to the operators of that system, and so also to you as a deployer, only if the design undergoes significant changes from that date; systems intended to be used by public authorities must comply at the latest by 2 August 2030 [3]. The prohibition of Article 5 applies in full [3]. Do not read the grace rule as an exemption from AI literacy or from Article 50 either: those duties apply to all AI systems, not only to high-risk systems [5] [2]. According to the recitals, the date on which the first unit of the same type and model was placed on the market or put into service in the Union counts [4]. Ask your supplier, therefore, when the system type came on the market and whether a significant design change is coming.
What already applies now
AI literacy (Article 4) and the prohibited practices (Article 5) have applied since 2 February 2025 [5]. The transparency duties of Article 50 have applied since the general date of 2 August 2026 [2].