404 Media tests how ChatGPT ads target users by prompt, phone number and email

404 Media 实测 ChatGPT 广告如何基于提示词、手机号和邮箱定向投放

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.

Why it matters: 404 Media's tests show ChatGPT ads can be targeted by prompt and personal identifiers, with both user input and advertiser-uploaded personal data feeding ad matching.