OpenAI is rolling ChatGPT ads into the UK and four more markets and testing a format that stacks several advertisers in one placement, sold by second-price auction. The assistant people use to skip search is becoming an ad network.
The tool everyone reached for to get answers without the ads is now learning how to sell them.
OpenAI is turning ChatGPT into an ad business in public. It has taken the ad pilot beyond the US into the UK first, with Japan, South Korea, Brazil and Mexico following in the coming weeks. At the same time it has started testing a format that puts several advertisers in a single placement, sold through a second-price auction.
Ads show only for free and Go users. Plus, Pro and Enterprise users stay clean. The multi-advertiser test groups relevant ads together inside one slot, which is OpenAI's way of squeezing more inventory out of a high-intent conversation without flooding the screen.
The pitch is product discovery for the user. The reality is an auction running inside a chat that people treat as neutral advice. Australia is not on the launch list yet. It will be.
The new markets getting ChatGPT ads, starting with the UK, as OpenAI builds an auction inside the assistant. Source: Search Engine Land, June 2026.
Why it matters
For two years the story was that AI assistants would starve search ads. Now the assistant is selling the same ads, with worse transparency and a built-in trust halo because it reads as a recommendation. When the placement lands in Australia, the businesses that win will be the ones already showing up in the answer, not the ones who waited to see if it was real.
The second-price auction model is the same machinery that runs Google and Meta. That means the people who already know how to run those auctions have a head start, and the cost of a high-intent conversation will only climb as more advertisers pile in.
What to do about it
The assistant was never going to stay free of ads. Plan for the version of it that bills you.