EU AI Act Article 50: AI Labelling Checklist for Developers

Since 2 August 2026, Article 50 of the EU AI Act requires developers of chatbots and generative systems to disclose AI interaction and mark synthetic content in machine-readable form. Generative systems already on the EU market before that date must comply with the marking duty by 2 December 2026. Fines reach €15 million or 3% of global turnover.

• Article 50 requires disclosing AI interaction at first contact and labelling synthetic content
• Systems on the EU market before 2 August 2026 must mark outputs by 2 December 2026
• Breaches can draw fines up to €15 million or 3% of global turnover
• The Commission published a voluntary Code of Practice on AI labelling on 10 June 2026