The European Commission designated ChatGPT as a very large online search engine on August 31, 2026, and named Reddit and Roblox very large online platforms. The move pulls all three into the Digital Services Act’s strictest tier.
Key Points
- The European Commission designated ChatGPT a very large online search engine, applying a search rulebook to an AI assistant.
- Reddit and Roblox became very large online platforms after clearing the EU user threshold that triggers the DSA’s strictest tier.
- All three services have until the end of January 2027 to assess and mitigate systemic risks in their algorithmic systems.
- Ireland’s Coimisiún na Meán supervises ChatGPT and Reddit, and the Dutch Authority for Consumers and Markets takes Roblox.
- The Commission now oversees 28 very large platforms and search engines, and gains investigative powers over each one.
Brussels applies a search engine rulebook to an AI assistant
The Commission treated ChatGPT as a hybrid service. Its designation notice calls ChatGPT “an Artificial Intelligence (AI) system that can engage with and respond to users’ prompts and queries, including by searching the web.” That web searching function dropped it into the search engine category.
Each service crossed the same trigger: 45 million average monthly users in the EU, a figure all three declared themselves. Designation carries no accusation of wrongdoing. It changes what each company has to prove.
We have designated ChatGPT as a Very Large Online Search Engine and Reddit and Roblox as Very Large Online Platforms under the Digital Services Act.
— European Commission (@EU_Commission) August 31, 2026
They now have four months to comply with additional DSA obligations.
More: https://t.co/gIR8vTolmB#DSA pic.twitter.com/luusxUd3i4
The four-month clock and what it covers?
All three now have to assess and mitigate the systemic risks flowing from their algorithmic systems. The Commission’s list is specific: dissemination of illegal content, negative effects on minors, users’ physical and mental well-being, fundamental rights, electoral processes and public security.
Roblox carries a heavier version of that burden. Its reported player base skews young, and the games on the platform are built by the same users the risk assessment has to protect.
Designation is a statement about scale. The Commission acted on user numbers the companies declared, and none has filed a risk assessment. Several questions stay open:
- Whether ChatGPT’s assessment covers the answers it generates or only the web results it surfaces?
- How the Commission audits a system that answers every prompt differently?
- What Roblox changes about age assurance before the deadline?
- Whether Reddit’s volunteer moderators count as part of the system under review?
Supervision splits between Dublin and The Hague
Enforcement runs jointly. The Commission supervises compliance with Coimisiún na Meán, Ireland’s Digital Services Coordinator, for ChatGPT and Reddit, and with the Authority for Consumers and Markets (ACM), the Dutch coordinator, for Roblox. Legal establishment decides the pairing.
That structure already has teeth. The Commission opened a formal case over Meta’s child safety measures on Instagram and Facebook, showing how the minors clause gets enforced in this tier. Designation also lets regulators examine the functionality behind each service, which matters most for ChatGPT, because the system under review is a model whose behavior shifts with every prompt.
SQ Magazine’s Takeaway
This designation closes a gap that widened as generative assistants became a default entry point to the web, and the Commission stretched a category written for feeds and ranked results to cover a chatbot. The effect lands on product teams: OpenAI, Reddit and Roblox each have to document how their ranking and recommendation systems create risk, then show mitigation an auditor can inspect. OpenAI has already shipped teen safety controls for ChatGPT, a partial answer on the minors clause.
What’s next is paperwork with consequences. Expect risk assessments and independent audit arrangements from all three before the deadline, plus data access requests from vetted researchers once the obligations bite. A formal proceeding is possible sooner, since the investigative powers arrived with the designation. EU users need not wait: parents can review Roblox account age and parental control settings today, and ChatGPT users can check their data and chat history controls. Those steps help reduce exposure while the platform-level work proceeds.
