Why is Lumo a better alternative to ChatGPT?

Lumo offers stronger privacy than ChatGPT [/lumo/ai/is-chatgpt-safe/] without the usual trade-offs. It is better suited for sensitive information because it does not log your chats, retain access to your data, or share your conversations with third parties. At the same time, it still gives you the features you expect from a dependable AI assistant, including PDF and image uploads, Proton Drive integration, and Projects to organize chats, files, and ideas.

What languages does Lumo support?

Lumo understands and responds in multiple languages, including English, French, German, Spanish, and Italian. We’re working to add support for even more languages.

Can I use Lumo for work or team collaboration?

Yes. Lumo can help with brainstorming, summarizing files, organizing ideas, and managing ongoing work. If you need AI for a company or team, Proton also offers Lumo for Business(new window) [https://lumo.proton.me/business].

Does Lumo comply with data protection regulations?

Proton’s strict no-logs policy and zero-access encryption technology make Lumo one of the safest AI chat assistants available. Your data remains on your device, and your conversations aren’t used to train the model, helping you easily comply with data protection laws like GDPR [/business/gdpr], HIPAA [/business/healthcare], or the CCPA.

Artificial Intelligence (AI) > A private ChatGPT alternative

A free, private ChatGPT alternative without the trade-offs

You shouldn’t have to trade your privacy for an AI assistant that feels useful and personal. Use a private ChatGPT alternative that lets you think out loud, explore ideas, and get things done without worrying about your data.

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Why Lumo is a safer ChatGPT alternative

Get the benefits of an AI assistant without giving up control of your conversations and data. Here's how Lumo compares to ChatGPT:

Comparison table between Lumo AI and ChatGPT
	Lumo AI	ChatGPT
Zero-access encrypted chat history	Yes	No
Does not log your chats	Yes	No
No AI training on your data*	Yes	No
Built and hosted in Europe	Yes	No
Open-source models	Yes	No
No third-party data sharing	Yes	No
No ads, ever	Yes	No
	Start a chat

*You can use ChatGPT in Temporary Mode to avoid AI training to some degree, or manually disable AI training in Settings → Data Controls by toggling off Improve the model for everyone, but this option is not disabled by default for personal ChatGPT accounts.

A free ChatGPT alternative where privacy isn't optional

Here's how Lumo gives you more privacy than ChatGPT:

No AI training

ChatGPT lets you turn off model training manually, but it is not disabled by default for personal accounts. With Lumo, your conversations are never used for AI training. Your prompts and chats stay yours.

No logging

ChatGPT lets you turn off chat history or use Temporary Chat, but it still logs your data. Lumo never logs your data, whether or not you use Ghost mode. We never retain access to your conversations.

Zero-access encryption

ChatGPT retains access to your chats, so they may be seen by OpenAI and third parties. Lumo protects your chats in transit with bidirectional asymmetric encryption and your chat history with zero-access encryption.

No ads or data sharing

While ChatGPT has started showing in-app ads, Lumo never shows ads and never shares your data with third parties. Our business model is based on subscriptions, not advertising or behavioral data.

Built in Europe

ChatGPT data may be subject to US jurisdiction because OpenAI is a US company. Lumo is built and hosted in Europe, on Proton-controlled servers, and operates under Swiss legal protections.

Open-source models

ChatGPT uses closed-source code, so there's no public visibility into how it works behind the scenes. Lumo uses open-source models, so its technology can be independently checked by anyone.

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Get more done with private AI

Here's how Lumo gives you more privacy than ChatGPT:

File uploads

Upload PDFs and images for Lumo to analyze and answer questions about.

Drive integration

Add files from Proton Drive directly to work with them easily.

Web search

Get answers backed by web results and up-to-date information.

Manage Projects

Group chats, files, and ideas in folders to easily keep track of work using Projects.

Ghost mode

Enjoy more privacy if you don’t want a conversation saved in your history.

Mobile apps

Use Lumo anywhere with apps for iOS, Android, and web.

Join an encrypted ecosystem that protects your privacy

Lumo is part of a privacy-first ecosystem that protects your data with end-to-end encryption and zero-access encryption. Nobody can see your data except you and the people you choose to share it with — not even us.

If you decide to create a free Lumo account, you'll also get access to our VPN(new window), email, calendar, cloud storage, document editor, spreadsheet editor, password manager, video conferencing, and more.

Over 100 million people and businesses worldwide trust us with their data

@recant731

on X

Just got Lumo to help plan out a road trip, with detailed routes and budgets for stays and my car on fuel. @ProtonPrivacy already had me stoked and now @asklumo has too.

@markruffalo

via Instagram comment

There are other chat apps you can use that are actually just as good, cheaper or more private that don’t fund evil in the world. Lumo from ProtonMail comes to mind

@banasnap.bsky.social‬

on Bluesky

Promising premise: a privacy-first AI is exactly what the current landscape was missing. With most services dominated by US and Chinese companies, having a European-based option, from a team already well-versed in online privacy, fills a much-needed gap. Looking forward to trying Lumo.

tintreack

on Reddit

This is pretty awesome, and the mascot is kind of adorable. I really love the branding of this. Also, as a visionary user who has to use ChatGPT for his workflow, thank you. I can finally get rid of that. I've been testing it out, it's pretty great! Nice job team.

Switch to a private AI assistant

Lumo is designed for people who want an AI assistant they can trust. Lumo isn’t trained on your chats, and it will never expose your private information to competitors, partners, or advertisers.

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Frequently asked questions about Lumo, the best alternative to ChatGPT

Why is Lumo a better alternative to ChatGPT?: Lumo offers stronger privacy than ChatGPT without the usual trade-offs. It is better suited for sensitive information because it does not log your chats, retain access to your data, or share your conversations with third parties. At the same time, it still gives you the features you expect from a dependable AI assistant, including PDF and image uploads, Proton Drive integration, and Projects to organize chats, files, and ideas.
What languages does Lumo support?: Lumo understands and responds in multiple languages, including English, French, German, Spanish, and Italian. We’re working to add support for even more languages.
Can I use Lumo for work or team collaboration?: Yes. Lumo can help with brainstorming, summarizing files, organizing ideas, and managing ongoing work. If you need AI for a company or team, Proton also offers Lumo for Business(new window).
Does Lumo comply with data protection regulations?: Proton’s strict no-logs policy and zero-access encryption technology make Lumo one of the safest AI chat assistants available. Your data remains on your device, and your conversations aren’t used to train the model, helping you easily comply with data protection laws like GDPR, HIPAA, or the CCPA.