AI Paper Trail analyzes exported ChatGPT and Claude conversation history to show users what personal information mainstream AI has learned about them.
Proton today launched AI Paper Trail, a free tool from its privacy-first AI assistant Lumo that allows anyone to see what mainstream AI platforms already know about them. By analyzing exported conversation history from ChatGPT or Claude, AI Paper Trail generates a personalized report showing the kinds of personal information that can be inferred from months or years of AI interactions — from occupation and relationships to habits, priorities, and interests.
As AI assistants become embedded in daily life, users are increasingly relying on them for everything from drafting work emails and brainstorming ideas, to seeking advice on health, finances, travel, and relationships. While individual conversations may appear harmless, together they can reveal remarkably detailed insights into a person’s identity, lifestyle, and behavior.
Unlike a privacy policy or data export, AI Paper Trail translates raw conversation history into an easy-to-understand report showing users how much ChatGPT or Claude know about their relationships, health, work and other personal information. The report will even estimate a financial value to the information it has.
“People understand that AI collects data, but most don’t realize how revealing their conversation history becomes over time,” said Eamonn Maguire, Director of Engineering at Proton. “AI Paper Trail makes that invisible profile visible. We want people to understand what they’re sharing with AI systems so they can make informed decisions about the tools they use.”
The tool is designed to be privacy-preserving from end to end. Users simply export their ChatGPT or Claude conversation history, upload it to AI Paper Trail, and receive their report. Uploaded data is analyzed and is never stored on Lumo’s servers. The report is visible only to the user.
The launch illustrates a growing privacy challenge as generative AI becomes ubiquitous. While people may think of AI prompts as isolated interactions, months of conversations can reveal much more than they intended to share. Depending on platform settings, AI providers may retain conversations, uploaded files, account information, and usage patterns for extended periods, with some services using that information to improve models or support other business purposes such as targeted advertising.
AI Paper Trail was created to help users better understand that accumulated digital footprint. Rather than asking people to blindly trust their AI assistants, the tool provides a tangible picture of what an AI assistant can learn through repeated interactions.
The launch also highlights Proton’s approach to AI with Lumo, the company’s privacy-first AI assistant. Unlike mainstream AI platforms that retain conversation histories or use user content to improve models, Lumo does not keep logs of conversations, does not use chats to train AI models, and protects conversations using zero-access encryption, ensuring that users remain in control of their data.
AI Paper Trail is available free and currently supports ChatGPT and Claude conversation exports, with support for additional AI platforms planned in future releases.
About Proton
Proton was started in Switzerland in 2014 by scientists who met at the European Organization for Nuclear Research (CERN). Our vision is to build an internet where privacy is the default through an ecosystem of services accessible to everyone, everywhere, every day. Our first product, Proton Mail, is now the world’s largest encrypted email service. Subsequent Proton products such as Proton VPN, Proton Calendar, Proton Drive, Proton Pass, and Lumo AI leverage the same advanced encryption to give users full control over how and with whom their data is shared. Our products are open source, developed by a team of over 500, and supported by an active community in more than 180 countries. Proton’s primary shareholder is the non-profit Proton Foundation based in Geneva, Switzerland. Today, Proton is making privacy universally accessible and protects over 100 million accounts, including those of journalists, some of the world’s largest organizations, and ordinary people from all around the world.
