Currently in beta for Proton's paid plans, Lumo is gradually rolling out to users, with plans to expand features and language support, including English, French, German, Spanish, and Italian.

Lumo has limitations such as the inability to support direct image uploads or processing, which affects its usability.

Proton emphasizes its European base as a key advantage, operating entirely within GDPR-regulated data centers in Europe to enhance privacy and data security.

Proton is investing over €100 million to strengthen its European infrastructure and develop a 'EuroStack' of privacy-first tools, aiming for greater digital independence from U.S. tech giants.

Lumo's European hosting ensures compliance with GDPR, appealing to sectors like blockchain and cryptocurrency that value decentralization and data control.

The AI is trained on publicly available sources up to October 2023, reducing misinformation, and it operates from Proton's European data centers to ensure privacy.

Lumo features an incognito mode for enhanced user anonymity, making it attractive to professionals in sensitive fields like finance and healthcare.

It offers two modes: one with internet access for real-time queries and another without, providing responses based solely on its training data.

Lumo processes all queries locally using open-source models, and it does not learn from user interactions post-training, ensuring user privacy.

Lumo is accessible via Proton Mail and Calendar, with plans to integrate with Proton Drive and expand mobile features later in 2025.

Proton has launched Lumo, a privacy-focused AI chatbot designed to prioritize user data protection, accessible via web and mobile apps.

Lumo offers functionalities like document summarization, email drafting, and coding assistance, all without retaining user data from uploaded files.