Should you buy ChatGPT ads or fix your AI visibility first?
By Daniela Ricaud, founder of Pretty Citable
For most ecommerce brands, fix your organic AI visibility first. The first independent study of ChatGPT ads found that a paid ChatGPT visit earned US shops $0.89, against $2.45 for a paid Google Search visit, and converted at 0.37% against 1.17%. Organic ChatGPT visitors in the same study converted at about 2%. OpenAI also says ads don't influence ChatGPT's answers, so an ad sits next to the recommendation and leaves the recommendation itself unchanged.
What ChatGPT ads are
OpenAI started testing ads on February 9, 2026, for logged-in adults on the Free and Go plans in the US. Its help center now lists the US, UK, Australia, New Zealand and Canada. Ads appear below ChatGPT's response, labeled as sponsored. OpenAI says ads run on separate systems from the chat model and that advertisers can't shape, rank or alter ChatGPT's answers.
Advertisers have piled in. Adthena counted 1,082 brands running ChatGPT ads in June and 6,333 in August, according to Digiday. Over the same months, shopping's share of US ad spend on the platform fell from 38% in April to 20% in September, per Sensor Tower data in the same report.
What the first independent study found
Maximilian Kaiser of the Vienna University of Economics and Business and Christian Schulze of the Frankfurt School of Finance & Management tracked 1,898 online shops through ChatGPT's ad rollout. Their working paper, dated October 2026, reports these numbers for US traffic:
- Revenue per visit: $0.89 for a paid ChatGPT visit, $2.45 for a paid Google Search visit.
- Conversion rate: 0.37% for paid ChatGPT, 1.17% for paid Google Search.
- Advertisers who bought both: 84 of 87 earned less per ChatGPT ad visit than per paid search visit.
- What a click is worth: at paid search's rate of return, the authors value a ChatGPT ad click at about $0.26. The largest publicly known account paid $1.72 per click.
- Organic ChatGPT visitors converted at about 2%, and that rate held steady after ads arrived.
What the study can't tell you yet
Read it as early evidence. The paper is under review, and its data ends on August 22, 2026. Advertisers chose to buy ChatGPT ads, so the comparison describes what happened without proving cause. One advertiser made 66% of all paid ChatGPT purchases in the data. One author also advises the company that supplied the data, which the coverage notes. OpenAI's own ads FAQ says it doesn't have performance benchmarks across advertisers yet.
Why organic comes first for most brands
- The ad doesn't change the answer. If ChatGPT recommends a competitor for "best vitamin C serum under $40", your ad sits under a recommendation for someone else.
- Organic visitors converted better. In the same data, organic ChatGPT visitors converted at about 2%, more than five times the paid rate.
- Product results cost nothing per click. ChatGPT's shopping results are organic and built from product data, so a clean product feed and clear product pages are the way in. Here's how to get your products recommended.
- The work carries over. Clearer product pages, consistent product data and mentions on the sites AI reads help in Google's AI Overviews, AI Mode, Perplexity and Claude too. An ad only runs in ChatGPT, and it stops the day you stop paying.
When a test budget makes sense
Ads can earn a small test once three things are true:
- You already show up in organic answers for your main buyer questions, and you want to hold that position.
- You can track ChatGPT visits and sales separately. Here's the GA4 and Shopify setup.
- You judge the test by revenue per visit next to your paid search, with a spending cap set before you start. Clicks alone won't tell you whether it worked.
Start with where you stand
Before you spend on either, find out what ChatGPT says when your buyers ask what to buy. Here's how to check it yourself, or the AI visibility audit tests 30 of your buyers' questions on ChatGPT, Google AI, Perplexity and Claude, with the brands named in your place and a ranked fix list.
Sources
- Frankfurt School: ChatGPT advertising delivers more than six times less value for money than Google Ads (Nov 2026)
- Search Engine Journal: Google Search ad visits out-earned ChatGPT ads in U.S.
- PPC Land: ChatGPT ad visits earn shops $0.89 against $2.45 for Google search ads
- Relevant Audience: what the ChatGPT ads study found, and its limits
- Digiday: Six thousand brands later, ChatGPT ads still have a conversion problem (Nov 5, 2026)
- eMarketer: ChatGPT gains advertisers faster than OpenAI can prove performance
- OpenAI Help Center: Ads in ChatGPT
- OpenAI Help Center: shopping and product results in ChatGPT
See where your brand stands
Run three buyer questions yourself in 60 seconds, or get the full AI Visibility Audit: 30 questions on four engines, a competitor map and a ranked fix list in 5 business days.
