ChatGPT Ad Visits Convert Far Below Google as AI Reporting Gap Persists
The Development
Analysis of U.S. traffic found that visits from ChatGPT ads earned advertisers a fraction of the revenue per visit that Google paid search delivered, and most advertisers running ChatGPT ads recorded no attributable sales from those visits. Google search ad visits out-earned ChatGPT ads on the core commercial metric. Separately, Google told Search Engine Journal it has nothing to announce on adding AI search data to Search Console, despite an approaching UK compliance date tied to the Competition and Markets Authority. The two developments land together: the newest paid AI surface is underperforming on return, and the largest AI search surface still reports little on how its AI features affect publisher and advertiser clicks.
Our Take
The ChatGPT numbers are not a verdict on conversational advertising; they are a verdict on early inventory. Users in a chat session are mid-task, not mid-purchase, and ad formats built for that context are still being invented. Treating weak first-year returns as permanent is as wrong as treating the channel as proven. The sharper story is the reporting gap. Google's silence on Search Console AI data means every marketer is now optimising AI visibility against partial information, while a regulatory deadline forces disclosure on someone else's timeline. Whoever controls the data controls the narrative about what AI search is worth. Marketers should assume current dashboards undercount AI-driven influence and overcount nothing.
What Changed
Advertisers can now buy placement inside a conversational answer engine, but the buying capability has outrun the measurement capability. Revenue-per-visit comparisons against paid search are possible; verified AI-surface click and conversion reporting from Google is not yet available.
Marketing Impact
Paid media teams face a budget-defence problem: ChatGPT ad tests will struggle to clear ROAS thresholds against Google paid search. Analytics and measurement leads inherit an attribution blind spot, since AI-surface influence in Search Console remains opaque and last-click models will systematically misjudge both channels.
Competitive Implication
Search-dominant advertisers with mature Google conversion pipelines gain, because the benchmark they already beat is now documented against a rival. Brands that shifted budget early on AI-channel hype are vulnerable, since weak sales evidence weakens their internal case. Publishers dependent on search referral stay exposed while click reporting remains incomplete.
Strategic Outlook
The UK compliance date will force Google to expose more AI search data, likely within the next two quarters, and that disclosure will set a reporting template other markets adopt in 2027. Expect OpenAI to answer the performance gap with conversion tracking and shopping-linked ad formats before Q1 2027 budgets lock.
The Exploit
Action Item
Heads of paid media should cap ChatGPT ad spend at a fixed test budget this quarter and require server-side conversion tracking before Q1 2027 planning, then rerun the revenue-per-visit comparison against Google paid search with their own data.