Confidential AI for professionals and teams

Lumo for Business is a privacy-first ChatGPT alternative for teams that offers the power of AI without compromising your business data. Lumo doesn’t store your chats or use them to train the language models. That makes it the ideal AI if you work with sensitive information, like legal documents or health records.

Lumo Plus is our most powerful plan for individuals who want unlimited usage, faster responses, and the ability to upload multiple and large files. Lumo for Business gives you these benefits plus administrative tools to manage your team’s access.

Lumo is the best AI chat assistant for privacy thanks to a unique combination of technical and legal protections. AI tools like ChatGPT, Gemini, and Claude keep logs of your chats on their servers, where they can be shared with third parties, leaked to hackers, or handed over to the US government. Lumo takes a different approach by protecting your data with zero-access encryption and never keeping any logs of your chats, so only you can access your data. Not even Proton can see it, meaning we can never share it or use it to train the AI models. And because Lumo is based in Europe, you benefit from strict data protection laws that prevent mass surveillance.

Proton’s strict no-logs policy and zero-access encryption technology make Lumo one of the safest AI chat assistants available. Your data remains on your device, and your conversations aren’t used to train the model, helping you easily comply with data protection laws like GDPR, HIPAA, or the CCPA.

Lumo currently supports chats in English, Chinese, Spanish, French, Portuguese, Russian, German, Japanese, Korean, Italian, and Dutch.

Lumo does not keep server-side logs and uses zero-access encryption to ensure your chats are only visible to you. Not even Proton can access your business data.