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Study: ChatGPT, Claude, Grok, and Perplexity share data with third-party ad networks.
IMDEA Networks found ChatGPT, Claude, Grok, and Perplexity send data to ad and analytics firms.
KEY POINTS
- Grok's guest conversations are fully public by default, allowing anyone to access chats without login.
- Claude and ChatGPT transmit conversation URLs and ad cookies to Meta and Google via Anthropic's servers.
- Perplexity removed its Meta tracker only last month, after the study began.
- Researchers say none of the four platforms explicitly disclose the embedded trackers to users.
COMPANIES
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