AI disclosure requirements in Greece: what applies since 2 August 2026
The EU AI Act's transparency obligations are a Union-wide regulation, so the substance is the same in Greece as everywhere in the EU: from 2 August 2026, AI systems that interact with people must disclose they're AI, synthetic media must carry machine-readable marking, and deepfakes and certain AI-generated public-interest text must be labeled. What differs country by country is who enforces it, in what language your users encounter it, and how quickly complaints turn into questions.
Enforcement in Greece
Greece published a draft implementing law on 21 June 2026, with public consultation running until 6 July 2026, meaning at the time of review the framework is close but not yet enacted. The draft designates the Hellenic Data Protection Authority (HDPA) as the central market surveillance authority and national contact point, with the Hellenic Telecommunications and Post Commission (EETT) as notifying authority. Separately, in November 2024 the Ministry of Digital Governance published Greece's Article 77 list of existing independent authorities that gain AI-Act fundamental-rights powers from 2 August 2026. The draft law also creates an AI Coordination and Expertise Centre and a regulatory sandbox for startups and SMEs. Article 50 itself applies from 2 August 2026 with the EU's penalty ceiling of €15 million or 3% of worldwide turnover, whether or not Greece's own law has finished its consultation process by then.
The four duties, as they show up on your site
- Article 50(1): chatbot disclosure
- Any AI system interacting with visitors must make that clear no later than the first interaction, in a clear and distinguishable way.A line in your terms doesn't satisfy it.
- Article 50(2): machine-readable marking
- AI-generated audio, images, video, and text must be marked in a machine-readable, detectable format.For generative systems already on the market before 2 Aug 2026, this specific duty has a transition until 2 Dec 2026; the rest does not.
- Article 50(3): emotion recognition & biometric categorisation
- People exposed must be informed the system is operating.
- Article 50(4): deepfake and AI-text labels
- Visible disclosure for deepfakes, and for AI-generated or manipulated text published to inform the public on matters of public interest.
Greece-specific practicalities
- The HDPA leading as market surveillance authority means Greece's AI Act supervision starts from a data-protection-first posture, expect GDPR-style complaint handling to extend naturally to AI-transparency questions
- The draft law's public consultation closed only days before this page's review date, so treat the designated-authority picture as very close to final but still confirm current status before relying on it
- The Article 77 fundamental-rights authorities (named November 2024) already exist and gain their AI-Act powers on schedule regardless of the newer draft law's progress
- Keep the Greek-language first-interaction screenshot in your evidence file, dated, alongside your widget settings export
Disclosure language should match your user-facing language. For a site serving Greece in Greek, a first-message line such as "Συνομιλείτε με έναν βοηθό τεχνητής νοημοσύνης" (you're chatting with an AI assistant) is the pattern to aim for, at first interaction, not in the όροι χρήσης.
Common questions
Greece's law was still in consultation close to the deadline, does that create a gap?
Not for Article 50 itself, it's directly applicable EU law from 2 August 2026 regardless of Greece's own legislative timeline. What was still settling was exactly who enforces it domestically and how, not whether the duty exists.
Why is a data protection authority leading general AI Act supervision in Greece?
The HDPA was designated the central market surveillance authority and contact point in the draft law, likely reflecting how much AI-Act supervision overlaps with existing GDPR expertise. Sector-specific fundamental-rights authorities from the 2024 Article 77 list remain relevant for their own domains.