Artificial Intelligence (AI) > A private Copilot alternative
The private and free Copilot alternative
From Microsoft 365 and Windows to Microsoft Edge, Copilot is embedded in the tools you use every day and has access to more of your data than you might realize. Lumo is a private Copilot alternative that helps you write, research, and get work done — while keeping every conversation completely confidential.
Why choose Lumo as a Copilot alternative
Microsoft Copilot logs your conversations and files, and as a US company, is legally obligated to comply with government data requests under laws like the CLOUD Act. Additionally, Copilot uses flex routing by default; EU and EFTA businesses risk having their Copilot data processed in the US and other countries during peak periods of use, potentially causing compliance and data sovereignty issues.
Lumo is built on a fundamentally different model: Your conversations are never logged, your data never leaves our Europe-based infrastructure, and chat histories are stored with zero-access encryption. Not even Proton can access them.
| |  Lumo AI |  Microsoft Copilot |
|---|---|---|
| Zero-access encrypted chat history | Da | Nu |
| Does not log your chats | Da | Nu |
| No AI training on your data* | Da | Nu |
| Built and hosted in Europe | Da | Nu |
| Open-source models | Da | Nu |
| No third-party data sharing | Da | Nu |
| No ads, ever | Da | Nu |
| |
*By default, the consumer version of Microsoft Copilot (Free, Pro, and Pro+) uses your chats to train its models and this setting must be manually disabled. Microsoft 365 Copilot (enterprise) exempts users from AI training unless they opt in. Even after disabling model training, your conversations may still be used for other purposes, including compliance, advertising, and product and system improvements.
The free Copilot alternative that's truly private
Like all Proton services, Lumo uses strong encryption to ensure your data is for your eyes only. You get all the benefits of an AI assistant without compromising on privacy and security.
No AI training
Copilot trains its models with your chats by default. Lumo ensures your conversations and any other data are never used for AI training. Your conversations are yours — full stop.
Zero logs
Copilot logs your data, leaving it subject to whatever Microsoft chooses to do with it. By comparison, Lumo keeps no logs — not your prompts, not your uploads, not your chats.
Zero-access encryption
Lumo protects your chat history with powerful zero-access encryption, meaning only you can decrypt it on your device. That's safer than using Microsoft, which always has a key to open up and look at your activity.
No ads or data sharing
Microsoft's broader ecosystem is built around advertising and behavioral data. Lumo never shows ads and never shares your data with vendors. Our business model is based on subscriptions, not monetizing you.
Protected by Swiss privacy laws
Because Microsoft is a US company, Copilot data falls under US jurisdiction. Lumo is built and hosted in Europe, runs on self-controlled servers, and benefits from robust Swiss and EU privacy protections.
Open-source models
Lumo exclusively uses open-source models and code. Unlike Microsoft, we don't ask you to take our word for it — anyone can audit our technology and verify our privacy claims.
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.
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 you 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.
Create a free Lumo account and you'll also unlock access to our VPN(fereastră nouă), 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.
Frequently asked questions about Lumo, the best alternative to ChatGPT
- Why is Lumo the best Copilot alternative?
- Can I use Lumo for work or team collaboration?
- Does Lumo comply with data protection regulations?
- What languages does Lumo support?
Learn more about Copilot and AI
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