Lumo by Proton

Product Introduction

1. Lumo by Proton is a zero-access encrypted AI assistant designed to provide confidential interactions without tracking or recording user conversations. It operates under strict privacy protocols developed by Proton, leveraging end-to-end encryption to ensure all queries remain private between the user and the AI. The service requires no account to start and is free for basic use, with optional upgrades for advanced features.
2. The core value of Lumo lies in its ability to deliver AI-powered assistance while maintaining uncompromising privacy standards. Unlike conventional AI tools, it eliminates data exploitation by ensuring conversations are never stored, shared, or used for model training. Built by the creators of Proton Mail and Proton VPN, Lumo inherits Proton’s Swiss-based, nonprofit commitment to user-centric privacy and security.

Main Features

1. Lumo employs zero-access encryption to ensure only the user can decrypt and read saved conversations, with no server-side storage of chat logs or metadata. This architecture prevents Proton or third parties from accessing conversation history, even under legal requests.
2. The AI operates without logging user interactions, meaning no records of queries or responses are retained after a session ends. This feature extends to web searches and file uploads, which are processed ephemerally to avoid persistent data trails.
3. Lumo’s codebase is fully open source, allowing independent audits to verify its privacy claims and ensure compliance with GDPR. Users retain full control over their data, including the ability to permanently delete conversations from their devices.

Problems Solved

1. Lumo addresses growing concerns about AI services harvesting personal data for profiling, advertising, or model training. By design, it eliminates the risk of sensitive information being monetized or leaked through insecure data practices.
2. The product targets privacy-conscious individuals, professionals handling confidential data, and users in regulated industries requiring GDPR-compliant tools. It is particularly relevant for those distrustful of Big Tech AI platforms.
3. Typical use cases include discussing sensitive topics (e.g., medical or legal queries), analyzing confidential documents via uploads, and conducting web searches without exposing search history to third-party trackers.

Unique Advantages

1. Unlike Big Tech AI assistants, Lumo is owned by a Swiss nonprofit organization legally barred from monetizing user data, aligning its incentives entirely with user privacy rather than corporate profit.
2. The integration of zero-access encryption with AI operations is an industry-first innovation, combining Proton’s proven email/VPN security infrastructure with large language model capabilities.
3. Competitive advantages include GDPR compliance by default, open-source verifiability, and seamless interoperability with Proton’s ecosystem of privacy tools, offering a unified secure workflow for users.

Frequently Asked Questions (FAQ)

1. How does Lumo’s zero-access encryption work? Lumo encrypts all conversations on the user’s device before transmitting them, ensuring only the user holds the decryption keys. This prevents Proton or external entities from accessing chat content, even if servers are compromised.
2. Can my conversations be used to train Lumo’s AI models? No, Lumo explicitly excludes user interactions from model training datasets. Conversations are transient and never retained beyond the immediate session unless manually saved by the user.
3. Is my data shared with governments or advertisers? Lumo adheres to strict Swiss privacy laws and GDPR, prohibiting data sharing with third parties unless legally compelled—a scenario mitigated by zero-access encryption rendering stored data unreadable.