Multio vs Lumo
Multio is an AI workspace — documents, research, code, personas — with free chat models out of the box, BYOK for premium. Lumo — privacy-first ai chat by proton — is great for a different audience. Here is the honest head-to-head.
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Every major model, one app
At a glance
| Multio | Lumo | |
|---|---|---|
| Workspace | Documents, research, code agent, personas | A curated set of open-source and proprietary models |
| Free tier | Free chat models, no credit card, no daily cap | Free tier with daily message limits; full access requires Proton Unlimited or Lumo Plus. |
| Premium models | BYOK — your provider keys, providers bill you directly | A curated set of open-source and proprietary models |
| Pricing | Free workspace + free chat models; BYOK for premium | Free → ~$9.99/mo Lumo Plus (or bundled with Proton Unlimited) |
| Mid-chat model switch | Yes — context preserved | Varies / limited |
What Lumo does well
Privacy-first AI chat by Proton.
- End-to-end encryption and zero-log architecture by Proton
- EU-hosted, GDPR and Swiss privacy law compliance
- Fits Proton Mail / Drive / VPN privacy stack
Where Multio differs
- Multio also commits to no training on user data — plus an AI agent platform (docs/research/code) and BYOK for premium models
- Free tier with free models on Multio; Lumo free tier is heavily metered
- File upload, voice, image generation included
- Mid-conversation model switching across providers
Bottom line — pick the one that fits
Pick Lumo if: You are deep in the Proton ecosystem and privacy is your top priority.
Pick Multio if: You want a no-training-on-data privacy posture plus an AI agent platform (Doc, Research, Code, Persona Agents) and BYOK for premium models.
Frequently asked questions
- Is Multio a good Lumo alternative?
- Yes. Multio is an AI agent platform — Doc, Research, Code, and Persona Agents — with first-party tools (web search, code execution, browser automation, file analysis). Free open-source chat is included; paid plans unlock the agents, tools, and full model lineup. BYOK is an optional add-on. You want a no-training-on-data privacy posture plus an AI agent platform (Doc, Research, Code, Persona Agents) and BYOK for premium models.
- What does Lumo do well?
- Lumo is genuinely strong at: End-to-end encryption and zero-log architecture by Proton; EU-hosted, GDPR and Swiss privacy law compliance; Fits Proton Mail / Drive / VPN privacy stack. You are deep in the Proton ecosystem and privacy is your top priority.
- Is Lumo free?
- Free tier with daily message limits; full access requires Proton Unlimited or Lumo Plus. Multio's free tier ships free models with no credit card and no daily message cap on free models.
- What does Multio offer that Lumo does not?
- Multio also commits to no training on user data — plus an AI agent platform (docs/research/code) and BYOK for premium models Free tier with free models on Multio; Lumo free tier is heavily metered File upload, voice, image generation included Mid-conversation model switching across providers
- Should I pick Multio or Lumo?
- Pick Lumo if: You are deep in the Proton ecosystem and privacy is your top priority. Pick Multio if: You want a no-training-on-data privacy posture plus an AI agent platform (Doc, Research, Code, Persona Agents) and BYOK for premium models.
Searching for the Lumo alternative page instead? It covers the same trade-offs from the alternative-shopping angle.