On July 23, 2025, Proton, the Switzerland-based company renowned for its secure digital tools, launched Lumo, a groundbreaking AI assistant designed to prioritize user privacy. In an era where AI tools often compromise data security, Lumo offers a safe, transparent, and feature-rich alternative for individuals, professionals, and students worldwide.
What Makes Lumo Unique?
Lumo combines robust privacy protections with practical functionality, making it a standout in the AI landscape:
- No Conversation Tracking: Proton ensures your chats are not stored on their servers, giving you complete privacy.
- End-to-End Encryption: Saved conversations are encrypted with zero-access technology, meaning only you can decrypt them on your device.
- Ghost Mode Option: For maximum security, enable ghost mode to make chats disappear instantly when you close the app or browser window.
- No Account Required: Access Lumo seamlessly via web at lumo.proton.me, or through dedicated iOS and Android apps, without needing to sign up.
Key Features of Lumo
Lumo is built to be both user-friendly and versatile, catering to a wide range of needs:
- File Analysis and Summarization: Upload documents, PDFs, or text files, and Lumo can summarize content, answer questions, or extract key insights, perfect for work or study.
- Drive Integration: Log in to your Proton Drive account to safely open and manage your files stored in its secure, encrypted cloud.
- Multilingual Capabilities: Communicate with Lumo in multiple languages, including English, French, Spanish, German, Italian, and more, making it ideal for global users.
- Optional Web Search: By default, Lumo avoids web searches to protect privacy, but you can enable searches powered by privacy-focused engines for broader information access.
- Cross-Platform Availability: Use Lumo on any device web, iOS, or Android for a consistent experience wherever you are.
Strong Privacy Protection
Proton’s European roots, operating under GDPR regulations from secure datacenters in Switzerland, give Lumo a unique advantage. Unlike many AI assistants tied to U.S. or China-based companies, Lumo is built on open-source language models, ensuring transparency in how it operates. Proton guarantees that your queries are never shared with third parties, stating, “Lumo is a European AI, designed to serve the world while keeping your data secure.” This independence from companies like OpenAI or other tech giants ensures your interactions remain private.
Pricing and Accessibility
Lumo is accessible to everyone, with flexible options to suit different needs:
- Free Tier: Guest users can ask a limited number of questions weekly without an account, perfect for trying Lumo risk-free.
- Proton Account Holders: If you have a Proton account, just log in to save your encrypted chats and upload small files securely.
- Lumo Plus: For $12.99/month, or save with the yearly plan at $9.99/month, and enjoy unlimited chats, more history, and upload files up to 10MB.
How Proton is Shaping AI
Proton has been a trusted name in privacy since launching Proton Mail, followed by VPN, Drive, and Pass, serving over 100 million users globally. Lumo builds on their 2024 AI writing assistant for Proton Mail, which runs locally to maintain security. With Lumo, Proton expands its vision of privacy-first AI, offering a tool that empowers users without exploiting their data.
Who Should Use Lumo?
Lumo is designed for a wide audience:
- Privacy-Conscious Users: Keep your data secure while using AI for daily tasks.
- Professionals: Analyze reports, draft emails, or summarize documents securely.
- Students and Researchers: Get quick summaries or answers in multiple languages without data risks.
- Global Users: Communicate effortlessly in your native language, from Spanish to Japanese.
Why Lumo Stands Out
As AI becomes essential for work, education, and personal tasks, privacy concerns grow. Many AI tools rely on user data for training or ads, but Lumo breaks this cycle. It offers a secure, transparent alternative that respects your data while delivering practical features like file analysis, multilingual support, and cloud integration. Whether you’re a privacy advocate or simply want a reliable AI assistant, Lumo is built to meet your needs.
How to Get Started
Ready to explore Lumo? Visit lumo.proton.me to start chatting instantly, or download the Lumo app from the iOS App Store or Google Play. No sign-up is needed for guest access, but a Proton account unlocks additional features like encrypted chat history. For power users, Lumo Plus offers enhanced capabilities at an affordable price.
The Future of AI with Privacy
In a world where data breaches and privacy scandals dominate headlines, Lumo represents a bold step forward. Lumo brings together powerful AI and Proton’s trusted privacy features, so you can use AI without worrying about your data’s security. As Proton continues to innovate, Lumo is a testament to their mission: technology that serves you, not the other way around.
