Duck.ai vs Lumo
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
AI tool · Free
DuckDuckGo's anonymous chat interface for several AI models, removing IP addresses before requests.
AI tool · Freemium
Proton's privacy-focused AI assistant that keeps no chat logs and encrypts saved conversations.
Our verdict
Duck.ai and Lumo are both privacy-focused AI chat tools, so they compete for the same person. Duck.ai is free and focuses on anonymous access to several third-party AI models, with no account needed and chats stored locally. Lumo is Proton's assistant, which keeps no chat logs, encrypts saved conversations, and offers a freemium tier, but its model capability trails frontier assistants.
Pick Duck.ai if you want free, anonymous access to several AI models without creating an account.
Pick Lumo if you want stronger privacy controls like encrypted saved chats and no logs, or you already use Proton.
| Key difference | Duck.ai | Lumo |
|---|---|---|
| Price | Free. | Freemium; the free and paid tiers are listed without detail here. |
| Account | No account required to use it. | Not specified in the information provided. |
| Chat storage | Chats are stored locally on your device. | Keeps no chat logs; saved conversations are encrypted. |
| Models | Anonymised access to several AI models. | Uses open models; model capability trails frontier assistants. |
| Platforms | Web, iOS and Android. | Web, iOS and Android. |
Written with AI from both products' catalogue entries · updated 2026-10-29
Who each one is for
Choose Duck.ai if you need…
- Anonymous AI questions
- Avoiding account sign-ups
Choose Lumo if you need…
- Privacy-conscious AI chat
- Proton users
Side-by-side
| Duck.ai | Lumo | |
|---|---|---|
| Type | Security & privacy · Private AI | Security & privacy · Private AI |
| Price | Free | Freemium |
| Platforms | Web, iOS, Android | Web, iOS, Android |
| Works with | — | — |
| Hands-on tested by us | Not yet | Not yet |
| Last checked | 2026-10-29 | 2026-10-29 |
What each one is
Duck.ai
DuckDuckGo's anonymous chat interface for several AI models, removing IP addresses before requests. Easy private access. Fewer features than the providers' own apps.
Lumo
Proton's privacy-focused AI assistant that keeps no chat logs and encrypts saved conversations. A genuine privacy option. Model capability trails frontier assistants.
Best for
Duck.ai
- Anonymous AI questions
- Avoiding account sign-ups
Lumo
- Privacy-conscious AI chat
- Proton users
Strengths
Duck.ai
- Anonymised access to several models
- No account required
- Chats stored locally
Lumo
- No-logs chat
- Encrypted chat history
- Open models
- File upload
Frequently asked questions
Should I use Duck.ai or Lumo?
Duck.ai and Lumo are both privacy-focused AI chat tools, so they compete for the same person. Duck.ai is free and focuses on anonymous access to several third-party AI models, with no account needed and chats stored locally. Lumo is Proton's assistant, which keeps no chat logs, encrypts saved conversations, and offers a freemium tier, but its model capability trails frontier assistants. Pick Duck.ai if you want free, anonymous access to several AI models without creating an account. Pick Lumo if you want stronger privacy controls like encrypted saved chats and no logs, or you already use Proton.
What is the difference between Duck.ai and Lumo?
Duck.ai: DuckDuckGo's anonymous chat interface for several AI models, removing IP addresses before requests. Lumo: Proton's privacy-focused AI assistant that keeps no chat logs and encrypts saved conversations. Duck.ai suits anonymous ai questions, while Lumo suits privacy-conscious ai chat.
Are Duck.ai and Lumo free?
Duck.ai: Free. Lumo: Freemium.
What are other alternatives to Duck.ai and Lumo?
Other options people compare them with include Brave Leo.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.