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Features, pricing and Editor Score side by side — to help you pick the right ai chatbots & assistants tool in 2026.
Quick verdict
On our Editor Score, Cohere North and Proton Lumo land almost level. Pick Cohere North if you want grounded enterprise chat and search; choose Proton Lumo for zero-access encrypted chat history. On pricing, Proton Lumo is the one with a free or freemium plan, so it's the cheaper place to start.
| Pricing | Paid | Freemium |
| Free tier | ||
| Best for | grounded enterprise chat and search | zero-access encrypted chat history |
Secure enterprise AI workspace and agent platform
Privacy-first AI assistant with confidential, encrypted chats
Choose Cohere North if…
Choose Proton Lumo if…
Your use case decides this one: Cohere North leans into grounded enterprise chat and search, while Proton Lumo is built for zero-access encrypted chat history. Weigh features and pricing for your workflow. Proton Lumo is the lower-cost place to start thanks to its free or freemium plan; the other is worth a trial if its feature set fits better.
Neither is universally better — it depends on your budget and which features matter most. The side-by-side breakdown above shows where each one wins.
Cohere North (paid) is best for grounded enterprise chat and search, while Proton Lumo (freemium) is best for zero-access encrypted chat history. See the full feature and pricing comparison above.
Proton Lumo has a free or freemium plan, so it's the cheaper way to start. For paid plans, check each tool's current pricing on its review page.
Proton Lumo is usually the easier starting point thanks to a lower barrier to entry. Beginners should favour a free tier and a simple interface over raw power.
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Last updated August 2026. Comparisons are ranked by our Editor Score (features, value and pricing, blended with verified user reviews where a tool has them) — see our methodology.