ChatGPT Is Smart, but Proton Lumo Offers Peace of Mind: Comparing AI Assistant Privacy
Worried that private AI conversations will train future models? Compare Proton Lumo and ChatGPT on privacy settings and capabilities to find an assistant you feel comfortable using.
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🛑 Are Your AI Conversations Being Used to Train Models?
ChatGPT and Claude are capable assistants, but many people overlook an important issue: your conversations are used to train their next generation of models.
If you use AI to polish an unpublished business plan, discuss private health concerns or organise personal financial information, that sensitive material reaches large companies' servers. Although you can manually turn off model training, the settings can be cumbersome and platform policies can change.
Is there an AI assistant designed from the start not to read your private history or train on it?
The Main Difference: Privacy Fortress vs All-Round Assistant
| Area | Proton Lumo: privacy first | ChatGPT: an all-rounder |
|---|---|---|
| Data privacy | Zero-access encryption (E2EE) for chat history. Proton cannot view your conversations and never uses them for model training. | Conversations may be used for training by default unless you opt out. OpenAI employees can review conversations in certain circumstances. |
| Model capabilities | Uses mainstream large language models, such as Llama, for everyday questions, writing and summaries. | Industry-leading capabilities. GPT-4o offers strong reasoning and multimodal features, alongside an extensive plugin and GPTs ecosystem. |
| Web search | Optional web search for current information. | Native web access with strong support for up-to-date information. |
| Best for | Sensitive drafts, private journals, unpublished business ideas and users who prioritise control over their data. | Complex coding, demanding reasoning, multimodal creation and workflows relying on many extensions. |
🏆 Why Does Proton Lumo Feel More Private?
- A Swiss privacy foundation: Like Proton Mail, Lumo inherits a zero-knowledge architecture. Conversations are encrypted before leaving your device, so even Proton engineers cannot read them.
- No training by default: You do not need to hunt through settings for a data-sharing switch: the product is designed not to train models on user data.
- Integration: Existing Proton users can use Lumo directly within Mail, Drive and Pass for a smooth experience.
🤔 Who Should Keep Using ChatGPT?
- You need the strongest reasoning capabilities for tasks such as complex coding or mathematics.
- You depend heavily on the GPTs ecosystem and custom instructions.
- Your discussions concern public information or work documents rather than highly confidential material.
🚀 A Practical Approach: Use Two AI Assistants
Choose according to the task:
- ChatGPT / Claude: Public articles, research, coding and brainstorming.
- Proton Lumo: Private email drafts, personal finances, unpublished business ideas and journals.
🎁 Try Lumo for Free
Do not let an AI assistant become a privacy weakness. Proton Lumo's free plan lets you try a more private approach to AI conversations.
💡 Tips to avoid problems:
- Lumo Plus is not included in standard Proton Unlimited: Check the package details separately before buying Unlimited; it does not include Lumo Plus by default.
- Still be careful with sensitive information: Even with encryption, avoid entering actual identity-document or bank-card numbers into an AI assistant. Start with the free plan to try privacy-focused AI.
💡 Disclosure: This article contains Proton Lumo affiliate links. We may earn a commission if you buy through them.