ChatGPT Ads Return 89 Cents Per Visit Versus Google's $2.45
The Development
Researchers at the Frankfurt School of Finance & Management and the Vienna University of Economics and Business found paid ChatGPT visits average $0.89 in revenue per session versus $2.45 for paid Google Search. Conversion rates were 0.37% against 1.17%, and 82% of the 102 advertisers studied recorded no purchases. The working paper, still under review, covers 1,898 ecommerce sites and nearly 10 billion visits across 60 weeks, using ad-free EU markets as the control. Unpaid ChatGPT referrals converted at 2.21% before ads launched, then fell 6-8% in volume afterward. The researchers estimate a ChatGPT click must cost about $0.26 to match search returns; the largest known account paid $1.72. New Street Research estimates roughly 60,000 advertisers by early October.
Our Take
The market is treating "AI traffic" as one channel. This study proves it is two with opposite profiles: organic referrals convert at 2.21% because the user already received a recommendation, while paid cards sit below the answer and catch lower-intent clicks. The cannibalization finding is the real story. OpenAI cannot raise ad value by moving placements into answers without degrading the organic referral flow that makes ChatGPT worth optimizing for. Its $102 billion 2030 ad projection requires roughly 40 times current revenue per free user. The $1 billion run-rate claim is unverified and not collected revenue. Spend is currently driven by novelty, not return.
What Changed
Advertisers can now buy placements inside a conversational answer engine at scale, and for the first time there is independent, control-group evidence of what that inventory returns. Paid and unpaid AI traffic can now be separated and priced as distinct channels with measurably different economics.
Marketing Impact
Media and performance teams carry the exposure. Current ChatGPT bids imply returns well below search at $1.72 CPCs, and attribution remains unreliable per Accuracast. Brand and GEO teams face a second problem: organic referral volume dropped after ads arrived, weakening the case for treating ChatGPT visibility as a stable free channel.
Competitive Implication
Google keeps its structural advantage: six times the revenue per ad dollar at published prices, plus mature measurement. Advertisers who scaled ChatGPT budgets on adoption momentum are vulnerable to writedowns. Teams with clean paid-versus-organic AI segmentation gain the ability to cut waste early while competitors blend the two.
Strategic Outlook
Expect OpenAI to push CPMs and CPCs down or ship richer in-answer formats within two quarters to close the return gap. Advertiser counts will keep rising through Q1 2027 while cohort-level returns disappoint, producing a churn wave among test-and-learn budgets. Third-party measurement vendors will gain share as native reporting fails to settle attribution disputes.
The Exploit
Action Item
Heads of performance media should cap ChatGPT ad spend at test-budget levels now, segment paid and organic ChatGPT traffic in analytics before Q1 2027 planning, and set a hard break-even CPC near $0.26 before renewing any commitments.