The European Commission has designated ChatGPT a Very Large Online Search Engine under the Digital Services Act, pulling OpenAI's flagship product into the bloc's strictest tier of platform regulation. The designation, announced on August 31, 2026, gives OpenAI until the end of December 2026 to comply with obligations covering minor safety, algorithmic transparency, illegal-content mitigation and independent risk audits. Reddit and Roblox were designated Very Large Online Platforms in the same announcement, subjecting them to the parallel VLOP rulebook.
The DSA triggers its heaviest obligations once a service crosses 45 million average monthly users in the EU. ChatGPT clearing that threshold is the first formal acknowledgment from Brussels that OpenAI's chatbot now sits alongside the largest social platforms in reach and influence. The Commission's framing — treating ChatGPT as a search engine rather than a hosting platform — carries specific legal weight, folding generative answers into the same category as Google Search under the law.
Under the DSA, designated services cannot target ads at minors and cannot use a user's sexual orientation, religion, ethnicity or political beliefs for ad targeting. They must publish detail on how recommendation and ranking systems work, offer users a non-personalized option, and submit to annual independent audits of systemic risks. Fines for non-compliance run up to 6% of global annual revenue.
Key facts
- 01The European Commission designated ChatGPT a Very Large Online Search Engine under the Digital Services Act on August 31, 2026.
- 02Reddit and Roblox were designated Very Large Online Platforms in the same announcement.
- 03The DSA threshold for these designations is 45 million average monthly users in the EU.
- 04OpenAI, Reddit and Roblox have until the end of December 2026 to comply with DSA obligations.
- 05The rules restrict targeted ads to minors and require transparency on recommendation algorithms.
The designation makes OpenAI accountable for ChatGPT's impact on minors, user mental health and the spread of illegal content across the EU. That last category is the most operationally demanding: generative outputs, not just user posts, will need risk-mitigation processes that regulators can inspect.
“These new designations mean that 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.”— Henna Virkkunen, EU executive vice-president for tech sovereignty, security and democracy
Henna Virkkunen, the EU executive vice-president for tech sovereignty, security and democracy, announced the designations and set the tone for how Brussels intends to treat generative AI going forward. The framing signals that the Commission views frontier chatbots as systemically important digital infrastructure, on par with the largest social networks, rather than as experimental software still finding its footing.
For OpenAI, the four-month runway to December 2026 is tight. The company will need to stand up EU-specific transparency reporting, publish algorithmic documentation, wire in the ad-targeting restrictions across ChatGPT's ad-adjacent surfaces, and produce a systemic-risk assessment that satisfies Commission auditors. None of that infrastructure was built with the DSA's search-engine category in mind, because the category did not previously apply to conversational AI.
Reddit and Roblox face the more familiar VLOP obligations, but the compliance clock is the same. Roblox in particular has been under sustained scrutiny in Europe over child-safety practices, and the VLOP designation formalizes an oversight regime that had previously operated through informal engagement. Reddit's designation caps a rapid ascent in EU reach following its 2024 IPO and expansion of its AI-licensing business.
The broader AI policy stack in Brussels now runs on two parallel tracks. The AI Act governs model-level obligations — training data disclosures, general-purpose AI rules, high-risk system classifications — while the DSA governs the consumer-facing product layer. ChatGPT's designation is the first case where a single OpenAI product sits inside both regimes simultaneously, and the interplay between them will shape how frontier labs deploy consumer products in the EU for years.
The compliance risk is real but manageable for a company of OpenAI's scale; the more consequential shift is precedential. Once ChatGPT is a VLOSE, every future frontier assistant that crosses 45 million EU monthly users enters the same regime by default. That reshapes the market entry playbook for Anthropic, Google and every startup chasing consumer scale — EU launches will now assume DSA obligations from day one rather than as a growth-stage problem, and the cost of running a mass-market chatbot in Europe just went up for everyone.
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