OpenAI builds new ad machine

Why it matters

OpenAI has already crossed one line in public: it is no longer merely discussing ads in theory. The company said on May 7 it had begun testing ads in ChatGPT and planned to expand that pilot beyond the United States, while a separate OpenAI update this month introduced a beta self-serve Ads Manager and cost-per-click buying tools. Business Insider reported this week that OpenAI is building a broader ad machine around ChatGPT and that the commercial threat to Google may come from treating a multi-turn conversation, rather than a typed keyword, as the key signal of intent. OpenAI has not publicly described its system in those terms, but its own ad materials already say ads can be shown based on a user’s current conversation. (openai.com) ### Where is the clearest public evidence that OpenAI is building an ads business? OpenAI published an “Our approach to advertising” post in January saying it planned to test ads in the U.S. for logged-in adults on ChatGPT’s Free and Go tiers. That post said the first ads would appear at the bottom of answers when there was a relevant sponsored product or service tied to the current conversation. (businessinsider.com) OpenAI then published a May 7 update saying it had begun testing ads in ChatGPT and would expand the pilot in the coming weeks to the United Kingdom, Mexico, Brazil, Japan and South Korea. The company said the ads were intended to support free access, would be clearly labeled, and would not change the model’s answers. Three weeks ago, OpenAI added more operating detail. (openai.com) The company said advertisers could buy ChatGPT ads through partners or a beta self-serve Ads Manager, and that it was introducing CPC bidding and expanded measurement tools. ### Why does “current conversation” matter more than a keyword? OpenAI’s January ad post used language that differs from traditional search advertising. (openai.com) The company said ad relevance would be based on “your current conversation,” not on a search query alone, and said users could ask why they were seeing a specific ad or dismiss it. (openai.com) Similarweb has been documenting the same broader shift from another angle. In its March 2026 generative AI report, the company said 35% of U.S. consumers use AI at the product discovery stage, compared with 13.6% who use search, and 32.9% use AI at the evaluation stage versus 15% for search. Similarweb said AI tools now dominate the purchase journey at every stage except the final transaction. (openai.com) That does not prove OpenAI is selling ads on a full conversation-level pricing model today. It does show that OpenAI’s own ad design is anchored to conversational context, while third-party traffic researchers are measuring consumer behavior earlier in the funnel than classic search. ### What has OpenAI said about privacy and limits? (similarweb.com) OpenAI said in its advertising materials that conversations are not shared with advertisers and that ads are separated from the organic answer. Its help page says the company is taking a phased approach and will not show ads in accounts where a user says, or OpenAI predicts, that the user is under 18. (openai.com) OpenAI’s ad policies also show how cautious the initial rollout is. The company said ads are currently limited mainly to categories such as lifestyle and household goods, local services, travel and experiences, and digital products or education, and it excludes sensitive contexts including mental and personal health conversations. ### What does this change for marketers trying to measure demand? (openai.com) Similarweb has already built products to track referral traffic from chatbots and to measure brand visibility across AI systems. Its materials describe AI chatbot traffic as a distinct referral source and frame AI discovery as a measurable channel rather than an extension of search. (openai.com) For advertisers, that means the old unit of intent may be less tidy. OpenAI’s public materials point to ads keyed to conversation context, and its new Ads Manager and CPC tools show the company is putting buying infrastructure underneath that model. OpenAI said the pilot will continue expanding by market as it gathers feedback, with the latest named countries including the United Kingdom, Mexico, Brazil, Japan and South Korea. (similarweb.com) (openai.com)

Key numbers

• The company said on May 7 it had begun testing ads in ChatGPT and planned to expand that pilot beyond the United States, while a separate OpenAI update this month introduced a beta self-serve Ads Manager and cost-per-click buying tools.
• (businessinsider.com) OpenAI then published a May 7 update saying it had begun testing ads in ChatGPT and would expand the pilot in the coming weeks to the United Kingdom, Mexico, Brazil, Japan and South Korea.
• In its March 2026 generative AI report, the company said 35% of U.S.
• consumers use AI at the product discovery stage, compared with 13.6% who use search, and 32.9% use AI at the evaluation stage versus 15% for search.

What happens next

• The company said on May 7 it had begun testing ads in ChatGPT and planned to expand that pilot beyond the United States, while a separate OpenAI update this month introduced a beta self-serve Ads Manager and cost-per-click buying tools.
• Business Insider reported this week that OpenAI is building a broader ad machine around ChatGPT and that the commercial threat to Google may come from treating a multi-turn conversation, rather than a typed keyword, as the key signal of intent.
• (businessinsider.com) OpenAI then published a May 7 update saying it had begun testing ads in ChatGPT and would expand the pilot in the coming weeks to the United Kingdom, Mexico, Brazil, Japan and South Korea.

Sources

• openai.com
• businessinsider.com
• openai.com
• openai.com
• similarweb.com
• openai.com
• similarweb.com

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