kitio.aiChatGPT vs Lumo
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. ChatGPT has the lower starting price: about $8 a month, against $13 for Lumo.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Voice conversations
- File and image analysis
- Web search with sources
- Deep research
- Custom GPTs
- Projects and memory
- Zero-access encrypted history
- No-logs policy
- Web search
- Proton Drive files
- Image generation
| Feature | ChatGPT | Lumo |
|---|---|---|
| Best for | OpenAI's general assistant for writing, research, coding and images | Proton's encrypted AI assistant that keeps no logs of your chats |
| Category | Chat assistants | Chat assistants |
| Pricing model | Freemium | Freemium |
| Starting price | $8/mo | $12.99/mo |
| Free plan | Yes | Yes |
| Made by | OpenAI | Proton |
| Based in | United States | Switzerland |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
ChatGPT has the lower starting price: about $8 a month, against $13 for Lumo.
Free plan
Cheapest paid plan
Top plan
Free trial
6 plans
Free
Free
- Access to GPT models with limits
- Limited file uploads and image generation
Go
$8/mo
- Higher message and upload limits
- More image generation
- Longer memory
Plus
$20/mo
- Advanced reasoning models
- Deep research and agent mode
- Codex access
Pro
$100/mo
- Starting price; $200 and $500 tiers
- Highest usage limits
- Pro reasoning model
Business
$25/mo
- Per user, 2-seat minimum
- Shared workspace and admin controls
- No training on your data
Enterprise
Contact sales
- Enterprise security and SSO
- Expanded context and limits
- Dedicated support
2 plans
Free
Free
- Limited weekly chats
- Encrypted chat history
- No logs kept
Lumo Plus
$12.99/mo
- Unlimited chats
- Extended chat history
- Larger file uploads
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
ChatGPT
- Handles a very wide range of tasks
- Strong voice mode on mobile
- Large ecosystem of custom GPTs
- Best models and limits sit on paid plans
- Free and Go tiers show ads
- Can state wrong facts confidently
Lumo
- Strong privacy guarantees
- Swiss and EU hosting
- Works with Proton Drive
- Models trail top frontier models
- Fewer integrations
- Image tools are new
Which one should you choose?
Choose ChatGPT if you want:
- Handles a very wide range of tasks
- Strong voice mode on mobile
- Large ecosystem of custom GPTs
Watch out: best models and limits sit on paid plans.
Choose Lumo if you want:
- Strong privacy guarantees
- Swiss and EU hosting
- Works with Proton Drive
Watch out: models trail top frontier models.
ChatGPT vs Lumo FAQ
What is the difference between ChatGPT and Lumo?
ChatGPT: OpenAI's general assistant for writing, research, coding and images. Lumo: Proton's encrypted AI assistant that keeps no logs of your chats. Both are chat assistants tools.
Is ChatGPT or Lumo cheaper?
ChatGPT has the lower starting price: about $8 a month, against $13 for Lumo.
Do ChatGPT and Lumo have free plans?
ChatGPT: Yes. Lumo: Yes.
Who makes ChatGPT?
ChatGPT is made by OpenAI, based in United States.
Who makes Lumo?
Lumo is made by Proton, based in Switzerland.
Which should I choose, ChatGPT or Lumo?
Choose ChatGPT if you value handles a very wide range of tasks and strong voice mode on mobile. Choose Lumo if you value strong privacy guarantees and swiss and eu hosting.