Every fact about an agency on this site comes from a public page and links to it, with the date we checked it. If an agency does not publish something, we write "not published". Platform facts (what you can buy, where, at what price) link to the platform's own page or, where the platform has not published it, to the trade press report, labelled as such. Lists are ordered by a fixed rule, stated below.
What counts as an AI ads agency
An agency is listed when its own site has a page, or a clearly named section of a service page, that sells running ads inside an AI assistant: ChatGPT ads, ads in Google AI Mode and AI Overviews, ads in Microsoft Copilot. A blog post about ChatGPT ads is not a service. Agencies that sell organic visibility in AI answers (GEO, AEO, "AI search optimization") without paid placements are not ad agencies; they are compared on geoagencyreviews.com.
In November 2026 we checked 45 agencies named by AI assistants, by "best ChatGPT ads agencies" lists and by Google results for agency searches, plus agencies found while reviewing Reddit Ads agencies. 27 sell AI-assistant ads on their own site and are listed; 18 that buyers might expect do not, and we say so where it matters.
What we record for each agency
| Field | Where it comes from |
|---|---|
| Platforms they run | Their service page: ChatGPT, Google AI Mode / AI Overviews, Microsoft Copilot, other |
| Price and fee model | Their pricing or service page: flat monthly fee, % of media spend, setup fee |
| Minimum or recommended media spend | Their own page; we note when they only repeat the platform's floor |
| Partner status | "Listed" only when the program's own page or the platform's announcement names them; otherwise "claimed", with their wording |
| First claimed | The earliest dated sign they sell ChatGPT ads: page date, launch post or first capture in the Internet Archive |
| Proof | ChatGPT-ads campaigns they publish themselves, named or anonymised, with the figure they give |
| Markets | Countries they say they run AI ads in |
| What they say about Perplexity | Perplexity stopped taking new advertisers in October 2025; a page that still sells Perplexity ads is a warning sign |
| Flags | Buyer risks visible on their own site, for example a "ChatGPT ads" page that sells organic citations, or prices that contradict each other |
Not used: other "best agencies" lists, including lists an agency publishes ranking itself first; reviews we cannot trace; AI-generated summaries.
How lists are ordered
- Agencies that publish proof of ChatGPT-ads work — a named or anonymised campaign with a figure.
- Agencies that publish a price, or a minimum or recommended media spend for the service (an explicit "no minimum" counts; repeating the platform's own floor does not).
- Everyone else.
Within each group, agencies are ordered by how often AI assistants named them in our tracking (below), then by the earliest date they claimed the service.
The rule rewards what a buyer can check. It does not rate campaign quality: no public data shows how well any agency's ChatGPT ads perform.
How we check platform facts
ChatGPT ads changed almost every month in 2026: new markets, bidding options, formats and policies. Each platform page shows a "checked on" date and its main facts link to:
- the platform's own announcement or help page (OpenAI, Google Ads Help, Microsoft Advertising, Amazon Ads);
- trade press (Search Engine Land, Digiday, PPC Land and others) where the platform has not published a number, such as CPM levels or minimums, labelled "reported by";
- both sources side by side when they conflict.
We re-check platform facts monthly and after every platform announcement. Every change goes into the changelog.
How we count AI mentions
We ask the same 9 questions about ads in AI assistants — for example "Which agencies can help advertise in ChatGPT?", "How do Perplexity ads work and what do they cost?" and "Ads in ChatGPT vs organic AI visibility — which gives better return for a B2B brand?" — in ChatGPT, Perplexity and Google AI Overviews. From 15 October to 13 November 2026 that gave 801 answers. An agency's count is the number of those answers that name it.
The count shows which agencies AI assistants already associate with the topic. It is not a quality score: assistants repeat what popular pages say, including lists written by agencies about themselves. In the same answers, official platform pages and guides were cited far more often than agency lists.
Updates
- Agency facts: checked monthly; the check date is shown under each page title.
- Platform facts: monthly and after each announcement.
- AI-mention counts: monthly.
- Every change to a list, a price or a platform fact is logged in the changelog.
Corrections
If a fact about your agency is wrong or out of date, send the correct value and the public page that shows it via the about page. We change a fact when a public source confirms it.