404 Media tests how ChatGPT ad targeting works
What happened
On October 15, 2026, 404 Media reported its hands-on test of ChatGPT ad targeting. OpenAI lets advertisers reach specific groups of ChatGPT users based on email address, phone number or a phone's unique identifier, and targeting also uses the prompts users type. Some users may not know that personal data uploaded by advertisers is used to match ads, the report says. It states ChatGPT has 1 billion monthly active users, that personal-data targeting is common in advertising, and that targeting based on chat prompts is relatively new.
Written by AI from the coverage · updated 43 minutes ago
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- AI HOT · IndustryPick404 Media tests how ChatGPT ads target users by prompt, phone number and email
404 Media found in testing that OpenAI lets advertisers target specific groups of ChatGPT users by email, phone number or a phone's unique identifier. Targeting also uses the prompts users type, and some users may not know that personal data uploaded by advertisers is used to match ads. The original article says ChatGPT has 1 billion monthly active users, and notes that personal data targeting is common in advertising while prompt-based targeting is newer.
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