ChatGPT ads went from a quiet test to a business generating a billion dollars in annualized revenue in under 200 days. That's fast enough that a lot of marketers are still catching up on the basics: what an ad actually looks like inside ChatGPT, how the auction actually decides a winner, and who can actually buy in right now.
It's also fast enough that a lot of the advice circulating about it is already dated. OpenAI opened self-serve access in May 2026, changed how eligibility works since the earliest pilot, and has kept adjusting targeting and policy as the platform matures. Here's a grounded, current look at where things actually stand.
How the ads actually appear
OpenAI began showing ads to logged-in adult users on ChatGPT's Free and Go tiers in the US in February 2026, then expanded to the UK, Mexico, Brazil, Japan and South Korea by August. The ad unit itself is called a "chat card": a sponsored box with a headline, a short description, an image and a link to your site, shown below the AI's response, never inside it.
One detail that changes how you should think about reach: ads only show on the Free and Go tiers. ChatGPT Plus, Pro and Team subscribers currently don't see ads at all. When a conversation touches a commercial topic, meal-kit delivery, business software, a hotel in a specific city, the system matches that context against active campaigns and surfaces the most relevant card. OpenAI has been explicit that ads don't influence what the model actually says in its answer.
The auction: what actually decides who wins
Pricing runs through a relevance-weighted, second-price auction, and the mechanics are worth understanding before you set a budget. Your bid isn't what you pay, similar to Google Ads, you pay just above the next-highest bidder's effective bid. The more important detail is what "effective bid" means here: it's your bid combined with a relevance score, and that relevance score behaves as a multiplier, not a tiebreaker.
In practice, a $3 bid paired with a tightly relevant, well-matched ad can outrank a $7 bid with generic creative. Relevance itself gets calculated from four inputs: your context hints, your ad copy, your headline and your landing page. Advertisers write context hints, plain-language descriptions of the conversations an ad should appear in, at the ad-group level. OpenAI's own guidance is to describe the buyer's situation, not your product, since the auction treats these as semantic signals rather than exact-match keywords.
What targeting can and can't do
Beyond context hints, advertisers can target by country, US state, DMA or ZIP code, and by platform, iOS, Android or web, and can upload custom audience lists of 25,000 or more users to include or exclude. What's missing compared to Google or Meta is any demographic targeting, broader audience-attribute targeting, or keyword exclusion. For a media buyer used to layering in age, income and interest data, that's a real gap, at least for now.
Bidding models and what to actually set as a budget
Advertisers choose between two bidding objectives: Reach, which optimizes for impressions and bills per thousand shown, or Clicks, which optimizes for and bills per valid click. For CPC campaigns, OpenAI's own guidance is to start with a maximum bid between $3 and $5. Real-world reported entry costs land in a similar range, roughly $2 to $8 per click depending on category, with CPMs somewhere between $25 and $60. Access itself opened up fast: the February 2026 pilot required commitments in the $250,000 to $300,000 range through agency partners like Dentsu, WPP, Omnicom and Publicis, before OpenAI removed the minimum spend requirement for US self-serve advertisers in May 2026.
Early performance data: what's actually working
Independent analysis from Similarweb puts the average ChatGPT ads click-through rate at around 0.68%, with the top quartile of advertisers reaching 1% and the best performers hitting 1.57%, well below what Google Search (roughly 6.64%) or Meta (roughly 1.71%) typically deliver. That's expected, since ChatGPT shows a single ad per response rather than a page of competing results.
The conversion side tells a different story. A good conversion rate on ChatGPT ads currently runs 4% to 7% for commercial categories, with top performers clearing 8%, against roughly 2% to 4% on Google Search and 1% to 3% on Meta. The likely explanation is self-qualification: someone clicking a ChatGPT ad has usually already worked through part of a decision in conversation before they click, a meaningfully warmer click than a cold search or social impression. Criteo's own data found traffic referred from ChatGPT and similar AI platforms converts at roughly 1.5 times the rate of other referral channels. The most-cited real-spend case, a 15-day, $60,000 campaign, returned $89,000, a 1.49x blended ROAS, though a single case shouldn't be read as a typical outcome.
What you can't advertise
OpenAI's ad policy prohibits several categories outright: adult content, alcohol and tobacco, gambling, political advertising, recreational drugs, weapons, counterfeit goods, and scams or deceptive offers. Healthcare, financial services and legal services sit in a restricted, case-by-case category, some advertisers get approved with the right licensing and safeguards, but many specific offers within those verticals remain disallowed. During this early period, OpenAI's stated focus is consumer categories: lifestyle and household goods, local services, travel and experiences, and digital products or education. Worth checking eligibility before building a campaign around anything outside that focus.
ChatGPT ads didn't take years to become a real channel. They took months. The brands figuring out how the auction and the policy actually work now have a real head start.
Why this matters now, not later
The trust question is the real one. ChatGPT has built its usefulness on being a straightforward source of information, and putting paid placements into that experience is a genuinely different challenge than putting an ad into a social feed people already expect to be monetized. How that tension resolves will shape what actually works here. In the meantime, the platform is real, growing fast, converting well on the clicks it does get, and increasingly accessible without the six-figure entry ticket it started with.
For how this compares to a channel you already know, see our look at ChatGPT ads vs Google Ads.