On August 31, 2026, the European Commission designated ChatGPT a Very Large Online Search Engine (VLOSE) under the Digital Services Act, the first time an AI chatbot has received that classification. Reddit and Roblox were designated Very Large Online Platforms the same day. OpenAI reported roughly 159.1 million average monthly EU users, more than three times the 45-million threshold that triggers designation.
Is ChatGPT a search engine? For years that question was a matter of framing and marketing. As of this designation, in the European Union, it has a legal answer: yes, specifically because of its live web-search function, not because of anything about generative AI as a category. That distinction is the part worth understanding, because it sets a template regulators can apply to Gemini, Claude, and Perplexity as each scales toward the same user threshold.
What does it mean that the EU classified ChatGPT as a search engine?
The Very Large Online Search Engine designation is a regulatory category under the Digital Services Act, previously applied only to services like Google Search and Bing. It comes with specific obligations: assessing and mitigating systemic risks related to illegal content, harm to minors, effects on users' physical and mental well-being, impacts on fundamental rights, and risks to electoral processes and public security. Designated services also face independent audits and enhanced transparency requirements that ordinary online services do not.
OpenAI has four months from notification, until January 2027, to bring ChatGPT into compliance with these VLOSE-specific obligations.
Why did the EU classify ChatGPT this way, and does it apply to other AI platforms?
Because the DSA's VLOSE threshold is defined by function and scale, not by product category: any online search engine with at least 45 million average monthly EU users qualifies, and ChatGPT's live web-search feature meets that functional definition regardless of the fact that it is built on a generative AI model. That is exactly why this designation is not a one-off. Gemini, Claude, and Perplexity all have their own live web-search capabilities, and as each grows its EU user base toward the 45-million threshold, the same capability-based test applies to them.
What changes for OpenAI now that ChatGPT is a designated search engine?
A VLOSE designation adds obligations that sit on top of the DSA rules every online platform already follows, most of them aimed at transparency and accountability rather than content moderation specifically.
| Obligation | What it requires |
|---|---|
| Systemic risk assessment | Formal analysis of risks to illegal content spread, minors, well-being, fundamental rights, elections, and public security |
| Independent audits | External, periodic auditing of how the service manages those risks |
| Enhanced transparency | Additional disclosure requirements beyond standard DSA baseline rules |
| Researcher data access | Qualified researchers can request data to study systemic risks |
| Compliance deadline | Four months from notification, targeting January 2027 |
A single search-engine icon inside a legal scale-of-justice outline, representing a chatbot brought under search-engine regulation
The EU did not classify ChatGPT as a search engine because it uses AI. It classified it because its live web-search feature functions like one at scale. That test applies to any AI platform with a comparable feature, not just OpenAI.
Does this ruling matter for GEO and AI-visibility work?
Indirectly, but meaningfully. The obligations themselves fall on OpenAI, not on the brands trying to get cited inside ChatGPT's answers, so nothing here is a new compliance requirement for a GEO program. What it does confirm, from a regulator rather than a marketer, is that ChatGPT's web-search function is functionally equivalent to a search engine at the scale that matters, the same premise GEO practice has operated on without an official designation to point to. Our EU AI Act Article 50 guide covers the separate content-labeling regulation that already applies to AI-generated content in the EU; this DSA designation is a different law targeting the platform itself, not your content.
Should businesses expect Gemini, Claude, or Perplexity to face the same designation?
Likely, on the Commission's own stated logic, once each platform's EU monthly user base crosses the 45-million threshold and its live web-search feature meets the same functional test applied to ChatGPT. Perplexity is built specifically around live web search and could meet the functional test earliest even at a smaller user base than Gemini or Claude, whose primary use cases extend well beyond search. Our AI citation tracking tools comparison already tracks all four platforms separately for exactly this reason: a regulatory or product change on one does not necessarily apply to the others, so per-platform data matters more than a blended view. Our technical SEO services and GEO optimization services track platform-level changes like this as part of ongoing account work, since a shift in one platform's transparency obligations can change what data becomes available for citation tracking down the line.
Frequently asked questions
Is ChatGPT a search engine?
As of August 31, 2026, yes, under EU law specifically: the European Commission designated ChatGPT a Very Large Online Search Engine under the Digital Services Act, based on its live web-search function and its EU user base of roughly 159.1 million average monthly users.
Why did the EU classify ChatGPT as a search engine instead of an AI chatbot?
Because the Digital Services Act's Very Large Online Search Engine category is defined by function and user scale, not product category; ChatGPT's live web-search feature, which retrieves and cites current web content, meets the same functional definition used for Google Search and Bing regardless of the underlying AI technology.
What is a Very Large Online Search Engine under the DSA?
A Very Large Online Search Engine is a Digital Services Act designation for any online search engine reaching at least 45 million average monthly users in the EU, requiring systemic risk assessments, independent audits, enhanced transparency, and qualified researcher data access.
Does this EU designation apply to Google AI Overviews, Perplexity, Gemini, or Claude?
Not yet, but the Commission's stated basis for the ChatGPT designation, a functional test tied to live web-search capability and user scale, applies to any comparable AI platform once it crosses the same 45-million EU user threshold.
What does OpenAI have to do now that ChatGPT is a designated VLOSE?
OpenAI has four months from notification, until January 2027, to comply with VLOSE-specific obligations, including systemic risk assessments, independent audits, enhanced transparency disclosures, and providing data access to qualified researchers studying systemic risks.
Does the ChatGPT VLOSE designation create new rules for brands doing GEO?
No; the obligations apply to OpenAI as the platform operator, not to businesses trying to get cited in ChatGPT's answers, so there is no new compliance requirement for a GEO program as a direct result of this designation.
How many EU users does ChatGPT have, according to this designation?
OpenAI reported approximately 159.1 million average monthly EU users as part of the designation process, more than three times the 45-million threshold required for VLOSE status under the Digital Services Act.
Sources: Commission designates ChatGPT, Reddit, Roblox under Digital Services Act (European Commission), EU places ChatGPT, Reddit and Roblox under strictest digital safety rules (Euronews), EU designates ChatGPT a Very Large Search Engine under DSA (AI Weekly)
This post is part of our AI SEO guide. Related reading: Google AI Mode Ads Do Not Buy You a, ChatGPT Visibility Audit Guide, Why Isn't My Business Cited by AI? Mentions vs. Citations.
Walid founded AY Rank to help businesses dominate AI search. He leads the GEO methodology and oversees client strategy across 50+ cities in Europe, Middle East, and North Africa.
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