The quarter ChatGPT ads went global
The key numbers and market changes from three months of ChatGPT ads, July to September 2026.
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Ads on most US prompts: 0% now show an ad
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The UK is now #1: 0M ads, ahead of the US
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Tracked this quarter: 0M ads across 20 markets
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ChatGPT and Google AI now show about the same number of ads
ChatGPT shows ads on most US prompts, but only a few each time. Google AI shows ads less often, but puts more on the page when it does.
ChatGPT
Google AIWhen Google shows ads, it shows more of them (7.34 vs 2.45), so both average about 2 ads per US search.
The UK is now the biggest ChatGPT ad market
The UK overtook the US with fewer prompts, because each UK answer shows more ads.
Source: Adthena, ChatGPT ads across 20 markets, July to September 2026
ChatGPT advertising at a glance
ChatGPT ads have gone from niche to near-universal, and now show on most US prompts.
The number of ChatGPT ads we recorded across 20 markets from July to September.
The UK and US make up almost three quarters of all ChatGPT ads.
A US mortgage lender cut ads showing on the wrong prompts in two weeks, using Adthena prompt data.
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