Two pieces of the EU AI Act became enforceable on August 2, 2026: Article 50 transparency obligations for systems that interact with people or generate synthetic content, and new AI Office powers to investigate and fine general-purpose model providers. The high-risk regime did not arrive — the Digital Omnibus deferred it to 2027 and 2028.
What actually applied on August 2, 2026?
The transparency rules and the GPAI enforcement powers did. As compliance analysts at Digital Applied documented before the date, the transparency duties in Article 50 and the Commission's general-purpose AI enforcement powers were left untouched, and both landed on August 2, 2026. Article 50 requires, among other things, that users be told when they are interacting with an AI system and that synthetic audio, image, video, or text content be marked in a machine-readable way.
The enforcement side is the sharper instrument. The AI Office can now issue information requests, demand model access, and order recalls of non-compliant general-purpose models, with fines running to 15 million euros or 3% of global annual turnover, whichever is higher. These powers apply to model providers regardless of where they are headquartered if their models are placed on the EU market.
One transitional detail softens the synthetic-content marking rule for existing systems: models and systems already on the market before August 2, 2026 have until December 2, 2026 to reach compliance with the marking obligation.
What did the Digital Omnibus postpone?
The high-risk regime, in the main. The European Commission confirmed when the regulation entered into force on July 27, 2026 that it delivers a targeted simplification of the AI rulebook while preserving safeguards, and that high-risk AI systems in Annex III now see rules apply starting 2 December 2027, with high-risk AI embedded in physical products following on 2 August 2028. Law firm Gibson Dunn's analysis of the agreement, published in May 2026, noted the text replaced the Commission's originally proposed conditional trigger mechanism with these fixed dates.
| Obligation group | Applies from |
|---|---|
| Article 50 transparency duties | 2 August 2026 (existing systems: marking by 2 December 2026) |
| GPAI model enforcement by the AI Office | 2 August 2026 |
| High-risk systems, Annex III (standalone) | 2 December 2027 |
| High-risk AI in regulated products, Annex I | 2 August 2028 |
| National AI regulatory sandboxes | 2 August 2027 |
The postponement is a delay, not a dilution of scope: the same systems remain classified high-risk, with the same obligations, on later dates. Per Gibson Dunn's summary, the deferral runs 12 to 16 months depending on the category.
Who has to act now, and how?
Three groups face live obligations rather than future ones. General-purpose model providers — the companies training and releasing large foundation models into the EU market — are the AI Office's direct counterparties for information requests and potential fines. Deployers of chatbots and synthetic media tools must ensure users are informed and outputs are marked. And any provider whose system touches biometrics, critical infrastructure, education, or employment should be using the extended window to prepare conformity assessments rather than treating the deferral as an exemption.
The practical checklist for the next twelve months is short: verify whether Article 50 applies to each product; implement machine-readable marking where it does; confirm the December 2, 2026 deadline for pre-existing systems; and track the AI Office's emerging codes of practice, which are the documents its enforcement will be measured against. The agreed text fixed the new dates in regulation, so calendar-driven planning is now possible in a way it was not under the earlier conditional mechanism.
For everyone outside legal departments, the visible marker of the August 2 milestone will be labels: more disclosures that a chatbot is a chatbot, and more machine-readable watermarks on generated media — the first EU-wide, enforceable signs of the AI Act in ordinary products.
