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CustomGPT.ai and EU AI Act Article 50

Yes — this is an AI system by design.

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Does the disclosure duty apply?

CustomGPT.ai is an LLM-based agent. There is no configuration in which it is not an AI system. If it speaks to people in the EU, Article 50(1) requires you to tell them they are dealing with an AI, clearly and no later than the first interaction.

LLM agent - duty applies.

Where the disclosure goes in CustomGPT.ai

CONSOLE PATH

Agent → Settings → Persona name and Welcome message.

Article 50(1) requires the information to be given clearly and distinguishably, at the latest at the time of the first interaction. A line buried in your privacy policy does not satisfy that. It has to be where the conversation starts.

Wording you can paste in

enYou're chatting with an AI assistant. It can make mistakes — ask for a human at any time.
deSie chatten mit einem KI-Assistenten. Er kann Fehler machen — fragen Sie jederzeit nach einem Menschen.
frVous discutez avec un assistant IA. Il peut se tromper — demandez un conseiller humain à tout moment.
esEstás hablando con un asistente de IA. Puede cometer errores — pide hablar con una persona cuando quieras.
itStai parlando con un assistente IA. Può commettere errori — puoi chiedere un operatore umano in qualsiasi momento.
nlJe chat met een AI-assistent. Deze kan fouten maken — vraag altijd om een medewerker.
plRozmawiasz z asystentem AI (sztuczna inteligencja). Może on popełniać błędy — w każdej chwili możesz poprosić o rozmowę z człowiekiem.
ptEstá a falar com um assistente de IA. Ele pode cometer erros — peça para falar com uma pessoa a qualquer momento.
svDu chattar med en AI-assistent. Den kan göra misstag — be när som helst om att få prata med en människa.
daDu chatter med en AI-assistent. Den kan begå fejl — bed når som helst om at tale med et menneske.
fiKeskustelet tekoälyavustajan kanssa. Se voi tehdä virheitä — voit milloin tahansa pyytää keskustelua ihmisen kanssa.
ltJūs kalbatės su dirbtinio intelekto asistentu. Jis gali klysti — bet kada galite paprašyti, kad atsakytų žmogus.

Serve the language your customer is browsing in. Article 50 also requires the disclosure to meet accessibility requirements, so do not deliver it as an image.

Deadlines that actually apply

2 August 2026 — in force. Art. 50(1) AI-interaction disclosure. Art. 50(4) deepfake and public-interest text disclosure.

2 December 2026. Art. 50(2) machine-readable marking of synthetic audio, image, video and text, for systems already on the market before 2 Aug 2026.

2 December 2027 — deferred. Most standalone high-risk (Annex III) duties, pushed back 16 months by the Digital Omnibus approved on 29 June 2026. Article 50 was not deferred.

Penalties for transparency breaches sit under Art. 99(4): up to €15m or 3% of worldwide annual turnover, whichever is higher, with the actual amounts set by each member state.

Check what your live site is actually doing

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Questions

Does CustomGPT.ai need an AI disclosure under the EU AI Act?

Yes — this is an AI system by design. CustomGPT.ai is an LLM-based agent. There is no configuration in which it is not an AI system. If it speaks to people in the EU, Article 50(1) requires you to tell them they are dealing with an AI, clearly and no later than the first interaction.

Is my vendor responsible, or am I?

You are. Article 50(1) places the duty on the provider of the AI system and, for deepfakes and public-interest text under 50(4), on the deployer. In practice, if you enabled the AI mode in CustomGPT.ai and pointed it at your customers, the exposure is yours.

When did this start applying?

Article 50(1) has applied since 2 August 2026. The machine-readable marking duty in Article 50(2) has a transition to 2 December 2026 for systems already on the market. The Digital Omnibus deferred most high-risk obligations to 2 December 2027 but did not defer Article 50.

Last reviewed 2026-08-21