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Who's buying ChatGPT ads? I analyzed 15K advertisers

Who's buying ChatGPT ads? I analyzed 15K advertisers

Tech Bloomberry
By tracking specific client-side code, researchers identified 15,000 entities currently running ads within the ChatGPT interface.
What: Henley Wing Chiu analyzed tracking patterns to identify companies utilizing OpenAI's ad platform, despite the company keeping its advertiser list private.
Why it matters: This demonstrates how developers can reverse-engineer private corporate strategies by inspecting common client-side tracking implementations.
Deep dive
  • Analysis focused on detecting tracking pixels or scripts unique to OpenAI ad delivery.
  • Identifying these advertisers allows mapping which industries are prioritizing AI-native advertising.
  • The methodology confirms that OpenAI is tracking granular user interaction data for ad targeting.
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