OpenAI's advertising business inside the ChatGPT mobile app is scaling quickly. According to Sensor Tower data, hourly ad impressions in July were roughly double April's level, and the advertiser count rose from about 300 to more than 820 over the same period.
Early advertisers skewed toward technology companies. Now large consumer brands including Home Depot, Intuit and Booking Holdings have joined. Categories widened beyond shopping into finance, travel and education, with finance rising from 2% of ads in April to 12% in July. The platform's monthly user base is estimated at around one billion.
Scale deserves context. Annual recurring ad revenue was around $100 million as of May — early-stage next to big tech ad businesses. OpenAI is running conservatively, restricting ads against health and political questions out of concern for user experience, with the goal of building a stable revenue source alongside subscriptions.
First, when inventory opens slower than advertisers arrive, prices rise. Impressions doubled while advertisers grew roughly 2.7x — competition is arriving first. Early-entry advantage usually gets spent in exactly this window.
Second, the category mix tells you what this channel is for. Finance jumping from 2% to 12% means high-consideration, high-value categories believe a conversational interface converts — they see potential in advisory-style queries, not just shopping recommendations.
Third, the health and politics restriction sets a brand-safety baseline. But that is platform policy, not disclosure standard; the boundary between answer and advertisement remains unresolved. See Ads Arrive Inside Conversational AI for that discussion.
From about 300 in April to more than 820 in July per Sensor Tower, with hourly ad impressions roughly doubling in the same period.
Beyond the original technology advertisers, large brands such as Home Depot, Intuit and Booking Holdings joined, and finance grew from 2% to 12% of ads between April and July.
Yes. OpenAI restricts ads against health and political questions, citing concern about degrading the user experience.
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