OpenAI's ad collector quietly ties your ChatGPT account to what you do on other websites
A report from Buchodi describes an OpenAI advertising-collection mechanism built around a `__obi` cookie. The report says the cookie lasts for a year, is minted by a signed JWT and can be returned through advertiser pixels. Its central allegation is that this creates a route to connect a ChatGPT account with activity on other websites. The source is reporting, not an OpenAI product announcement, so the implementation details should be treated as allegations from that investigation rather than confirmed platform policy. For operators, the immediate issue is data-flow visibility: advertising and analytics components can create account-linked context beyond the product surface a user expects.
Our takeTreat account-linked ad telemetry as a governance question. Map what third-party pixels receive before making privacy assurances.
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