The AI Act code of practice covering transparency of AI-generated content moved from a draft published 8 May 2026, through a stakeholder consultation that closed 3 June 2026, to a final text published 10 June 2026 — all ahead of 2 August 2026, when Article 50’s transparency obligations become legally binding across the EU. The AI Act code of practice on transparency is a voluntary, European Commission-facilitated compliance tool, distinct from the earlier General-Purpose AI Code of Practice, that helps providers and deployers of generative AI systems meet the marking, detection and labelling duties set out in Regulation (EU) 2024/1689.
For research offices, publishers and institutional communications teams, this is not an abstract EU process. Article 50 reaches any organisation whose AI-generated text, audio, image or video content reaches people in the EU — including AI-assisted research summaries and funder communications. This guide walks through the timeline as a compliance-planning tool.
- What is the AI Act code of practice on transparency?
- What changed in the May 2026 draft guidelines?
- What did the consultation closing 3 June 2026 cover?
- What applies from 2 August 2026 — and where is there a grace period?
- How should research offices prepare?
- Answer-first questions on the AI Act code of practice
- Implications and outlook
What is the AI Act code of practice on transparency?
The Code of Practice on Transparency of AI-Generated Content is a non-binding framework drafted by independent experts, generative AI providers, deployer associations, civil society bodies and academics, facilitated by the EU AI Office. It gives organisations a recognised way to demonstrate compliance with Article 50 of the AI Act without waiting for harmonised technical standards to be finalised.
This is a separate instrument from the General-Purpose AI (GPAI) Code of Practice under Article 56, published in final form on 10 July 2025 and applying to GPAI model providers since 2 August 2025. Confusing the two is a common error in searches for “AI Act code of practice” — the table below sets out the difference.
| Feature | GPAI Code of Practice (Article 56) | Transparency Code of Practice (Article 50) |
|---|---|---|
| Legal basis | Article 56, Regulation (EU) 2024/1689 | Article 50, Regulation (EU) 2024/1689 |
| Audience | Providers of general-purpose AI models | Providers and deployers of generative AI systems |
| Final text published | 10 July 2025 | 10 June 2026 |
| Obligations apply from | 2 August 2025 | 2 August 2026 |
| Core focus | Safety, copyright, transparency documentation for models | Marking, detection and labelling of AI-generated content |
The transparency code is organised around two working groups mirroring Article 50’s structure: Working Group 1 covers providers’ obligations to mark AI-generated audio, image, video and text in a machine-readable, detectable format; Working Group 2 covers deployers’ obligations to label deepfakes and AI-generated text on matters of public interest.
What changed in the May 2026 draft guidelines?
On 8 May 2026, the European Commission published draft implementation guidelines on Article 50 alongside the near-final Code of Practice text. These guidelines are the Commission’s own interpretive document — distinct from the stakeholder-drafted Code — clarifying how the transparency obligations apply in practice.
The May draft addressed several points that had been ambiguous through the drafting rounds that ran from November 2025 to March 2026:
- How “AI system” is scoped for the purposes of the human-interaction disclosure duty in Article 50(1);
- The deepfake definition, including where content depicting real persons, places or events would falsely appear authentic;
- The editorial-responsibility carve-out, under which AI-generated text on matters of public interest need not be labelled if it has undergone human review and is subject to editorial responsibility;
- Expectations that marking techniques be interoperable, robust and reflect the “generally acknowledged state of the art” rather than a single mandated technology.
What did the consultation closing 3 June 2026 cover?
The Commission’s consultation on the May draft guidelines closed on 3 June 2026, giving providers, deployers, standards bodies and civil society a final window to flag practical gaps before the text was locked. In parallel, the multi-stakeholder drafting process for the Code of Practice itself held its closing plenary, and the AI Office published the final Code of Practice on Transparency of AI-Generated Content on 10 June 2026.
This timing is deliberate: the guidelines interpret what Article 50 legally requires, while the Code offers voluntary methods — marking formats, labelling icons, detection mechanisms — for meeting those requirements. Signing the Code is optional; complying with Article 50 by 2 August 2026 is not.
What applies from 2 August 2026 — and where is there a grace period?
From 2 August 2026, Article 50 becomes legally applicable across all EU member states. Providers must ensure outputs of generative AI systems are marked in a machine-readable format detectable as artificially generated or manipulated. Deployers must disclose deepfakes and label AI-generated or manipulated text published on matters of public interest, unless a human has reviewed the content and taken editorial responsibility for it.
One practical relief applies to systems already in the market. Legal trackers monitoring the rollout report that generative AI systems placed on the market before 2 August 2026 have until 2 December 2026 to retrofit the machine-readable marking requirement under Article 50(2) — a four-month bridge for legacy tooling rather than a change to the core application date.
How should research offices prepare?
Research administration, publisher and funder-communications teams should treat 2 August 2026 as a hard planning date, not a distant EU milestone. The obligations bite wherever AI-generated text, images or audio reach an EU audience — including institutional websites, funder newsletters, and AI-assisted drafting workflows.
- Inventory every generative AI tool used to produce public-facing text, images, audio or video, and confirm whether outputs are already machine-readably marked;
- Map authorship and editorial-review workflows against the human-review carve-out, so genuinely human-edited content is not mislabelled as AI-generated;
- Align AI-use disclosure practices in manuscripts and grant narratives with existing publisher policies (for example, ICMJE and COPE guidance on declaring generative AI assistance), since Article 50 labelling and authorship disclosure are converging expectations;
- Confirm with vendors supplying AI writing, transcription or media tools whether their systems will meet the marking requirement by 2 August 2026 or fall under the 2 December 2026 legacy window;
- Assign clear internal ownership — communications, legal/compliance, and research integrity offices each hold part of this obligation and need a shared owner before August.
Answer-first questions on the AI Act code of practice
What is the EU AI Act code of practice?
The EU AI Act code of practice on transparency is a voluntary framework, facilitated by the AI Office, that helps providers and deployers of generative AI systems meet Article 50’s marking, detection and labelling duties. It was finalised on 10 June 2026, ahead of the 2 August 2026 application date, and sits alongside a separate GPAI Code of Practice covering model-level obligations under Article 56.
Is there a UK equivalent to the AI Act code of practice?
No. The UK has no AI-specific legislation equivalent to the EU AI Act; AI is instead regulated through existing sector frameworks. UK research institutions, publishers and vendors that publish AI-generated content reaching EU audiences, or that operate EU subsidiaries, must still meet Article 50’s transparency obligations from 2 August 2026.
How does the transparency code relate to the AI Act’s risk categories?
The AI Act classifies systems into four risk tiers — unacceptable, high, limited and minimal risk. Article 50’s transparency duties sit within the “limited risk” tier and apply horizontally to generative and interactive systems regardless of their risk classification elsewhere, which is why the transparency code applies more broadly than the high-risk rules.
Implications and outlook
The 2 August 2026 application date closes a year-long drafting process that began in September 2025 and ran through three formal drafting rounds before the May 2026 draft and June 2026 consultation. For research-adjacent organisations, the practical implication is less about the Code of Practice itself — which remains voluntary — and more about Article 50, which is not. Institutions that already maintain authorship-disclosure and editorial-review workflows for generative AI have a head start.
Expect further guidance around the 2 December 2026 legacy-marking deadline, and continued convergence between AI Act transparency labelling and research-integrity disclosure norms from bodies such as ICMJE and COPE. Organisations tracking both processes together, rather than as separate compliance tracks, will be better placed for the obligations that follow.
See CASRAI’s related coverage of research administration compliance workflows and authorship transparency disclosures for how generative AI disclosure expectations intersect with existing research-integrity practice.