ChatGPT hits new EU mark: first AI chatbot under tougher rules
The EU designated ChatGPT as a Very Large Online Search Engine, imposing stricter rules.
Why it matters: The ruling shows growing AI regulation in Europe, requiring legal teams to advise clients on tougher compliance mandates affecting millions.
- On August 31, 2026, the EU designated ChatGPT as a Very Large Online Search Engine (VLOSE) under the Digital Services Act (DSA).
- ChatGPT had over 159 million users in the EU by March 2026, exceeding the DSA's 45 million monthly active users threshold.
- ChatGPT, Reddit, and Roblox have until November 2026 to comply with additional DSA obligations.
- The EU began enforcing AI Act transparency rules on August 2, 2026, requiring clear labeling of AI-generated content.
On August 31, 2026, the European Commission designated ChatGPT as a Very Large Online Search Engine (VLOSE) under the Digital Services Act (DSA). This marks the first time an AI chatbot has been subjected to these enhanced regulatory standards.
ChatGPT reported more than 159 million users in the European Union by the end of March 2026, representing over a third of the bloc’s population. The DSA applies to platforms and search engines with more than 45 million monthly active users. Given ChatGPT's user base greatly exceeds this threshold, it must now comply with stricter rules designed to ensure transparency, accountability, and user safety.
Alongside Reddit and Roblox, ChatGPT has four months, until November 2026, to meet these additional obligations under the DSA. The regulation requires platforms of this scale to take stronger measures to mitigate risks arising from their services.
In parallel, the European Commission began enforcing the AI Act transparency requirements on August 2, 2026. One key measure mandates that AI-generated content must be clearly labeled so users know when they are interacting with AI or consuming AI-produced material.
As EU Technology Chief Henna Virkkunen noted, "ChatGPT, Reddit and Roblox will now be held to a higher standard of scrutiny and accountability in the European Union, in line with their large impact on our citizens and society." The move signals an increasingly stringent regulatory environment for AI technology companies operating in Europe.
By the numbers:
- 159 million — ChatGPT users in the EU as of March 2026
- 45 million — Monthly active user threshold for DSA designation
- 4 months — Compliance period before November 2026 deadline
What's next: ChatGPT and other designated platforms must comply with DSA obligations by the November 2026 deadline; ongoing enforcement of AI Act transparency rules will continue evolving.