AI assistants like ChatGPT promise to make work faster and easier. But every time you enter sensitive information, describe a confidential problem, or ask a personal question, you are handing over valuable data that can be collected, processed, and shared beyond what you intended.
Big Tech AI tools collect and analyze user interactions to improve their models and monetize their platforms, raising serious concerns about intellectual property and data ownership. Public concern peaked in March 2025, when more than four million users(nouvelle fenêtre) pledged to leave ChatGPT after a controversial partnership with the US government raised fears about mass surveillance and government access to AI training data.
As AI privacy and security issues become more widely understood, many people are now looking for a private ChatGPT alternative that lets them use AI without giving up control of their data.
- Why do you need a ChatGPT alternative?
- What a private alternative to ChatGPT looks like
- Switch to private AI
Why do you need a ChatGPT alternative?
AI assistants like ChatGPT can be incredibly useful, but they’re not designed to be private workspaces. Like many Big Tech platforms, ChatGPT collects data from user interactions, including your prompts, uploaded files, and usage patterns. This data may be stored, reviewed by humans for quality control, or used to improve AI models.
Because conversations aren’t protected with zero-access encryption, the platform itself or its partners may be able to access the data you submit. Anything you type into an AI chat could be stored, analyzed, or exposed in the event of a breach, which creates risks for both individuals and organizations. Prompts may reveal sensitive personal information, while employees might unknowingly paste confidential company data into AI tools, exposing intellectual property or client information.
At the same time, OpenAI has begun introducing ads into ChatGPT for some users, raising even more questions about how it monetizes user interactions and what role personal data plays. It’s no wonder why many people are questioning how safe ChatGPT really is, especially for sensitive information.
What a private alternative to ChatGPT looks like
If you’re uneasy about handing over your personal and business data every time you use an AI assistant, you’re not alone — and you’re not out of options. We built Lumo to be everything the current generation of AI tools isn’t: private, secure, transparent, and built to work for you, not for advertisers or data brokers.
Here’s what makes Lumo unique:
No logs
When you send a message, it’s securely transmitted to our servers using bidirectional asymmetric encryption — a form of end-to-end encryption. Lumo processes your query on servers in Europe that we control, generates a response, and then immediately deletes your data.
Zero-access encrypted chat history
If you use Lumo with a Proton Account, your chat history is saved with zero-access encryption, so you’re the only one who can access it. Or, if you prefer not to keep any history at all, you can use Lumo in Ghost mode, where nothing is saved after your session ends. Either way, you own and control your data, not Proton.
Not used for AI training
Your conversations are never used to train the model. Unlike other AI tools that learn from user data, Lumo doesn’t feed your chats back into the system, where they can potentially be leaked or used to profile you.
Built and hosted in Europe
Lumo is hosted on European servers and operates under European legal jurisdiction. Unlike Big Tech based in the US, you’re protected from warrantless or mass surveillance regimes.
Open source and transparent
Unlike AI tools similar to ChatGPT that rely on closed proprietary systems, Lumo uses open-source models and open source code for all our apps. Anyone can review how these models operate and confirm that there’s no silent tracking or unauthorized data collection.
No third-party data sharing
Big Tech AI assistants send your data to vendors, partners, or other third parties. With Lumo, your chats are encrypted from your device to our servers, processed privately, and then deleted.
No ads
Lumo never shows ads and never uses your conversations for targeted ads. Unlike many AI platforms that rely on advertising or behavioral data to generate revenue, Lumo is supported by subscriptions — not by profiling users. That means your interactions stay private and the assistant’s responses aren’t influenced by advertisers.
Switch to private AI
With Lumo, you can stop worrying about the type of sensitive data you enter into an AI chatbot. You can:
- Draft contracts with confidential legal or business details.
- Upload proprietary documents without worrying about leaks.
- Analyze sensitive personal data like PII, HR records, or client information with full control.
- Explore private medical questions without exposing your health data.
- Write, code, or brainstorm — all without leaving a digital paper trail.
- Work on long-term projects using files, chats, and instructions in a private encrypted workspace.
Try Lumo now and see what AI looks like when your privacy matters most. And when you’re ready to bring that same level of privacy to your workplace, Lumo for Business helps your team collaborate securely and stay productive without compromising sensitive company data.
You can also download Lumo from Google Play(nouvelle fenêtre) or App Store(nouvelle fenêtre).
