Pricing Units, Proprietary Limits & Migration Complexity
The operational fine print U.S. SaaS founders and small business owners check before committing.
| Evaluation Dimension | Proton Lumo | Psono |
|---|---|---|
| Starting Price & Billing Unit How your monthly bill scales | Free / $14/mo Business Cloud Plan Developer Seat / Credits | Free / $19/mo Managed Cloud Pro Developer Seat / Credits |
| Free Tier & Included Quotas Sandbox vs production allowance | Proton Lumo Free / Starter Plan tier (core ai coding & developer tools capabilities); Business Cloud Plan upgrades start at $14/mo | Psono is self-hostable (Open Source (APACHE-2)) with managed Managed Cloud Pro cloud starting at $19/mo |
| Proprietary Limits & Gotchas Caps, lock-in & overage cliffs | Proton Lumo tier notes — Flat-Rate Small Business Pricing: Transparent SMB pricing; Full API & Webhooks: Cloud API & integrations | Psono tier notes — Flat-Rate Small Business Pricing: No per-seat enterprise lock-in; Full API & Webhooks: Open API & webhooks |
| Migration Complexity Engineering & ops switching effort | Low (< 30 mins) Configure Proton Lumo (Flat-Rate Small Business Pricing, Full API & Webhooks) and import existing ai coding & developer tools records | Low (< 30 mins) Configure Psono (Flat-Rate Small Business Pricing, Full API & Webhooks, Self-Hostable / Open Source) and import existing ai coding & developer tools records |
| Target Company Stage Best operational fit | Solo Founders & AI Coding & Developer Tools SMBs | Solo Founders & AI Coding & Developer Tools SMBs |
| Data Privacy & Compliance U.S. & enterprise governance | GDPR / CCPA ReadyFlat-Rate Small BusinessTransparent USD Pricing | Open Source / Self-HostGDPR / CCPA ReadyFlat-Rate Small Business |
Interactive Team Seat & ROI Simulator
Adjust your team headcount to compare real monthly and annual licensing costs.
Proton Lumo: Developer Seat / Credits
Psono: Developer Seat / Credits
Estimated Annual Savings with Proton Lumo: $300/yr
Saves ~26% annually at this workload tier based on published USD rates.
Technical Capability Matrix
Side-by-side feature, API, and data-ownership checklist.
| Feature Specification | Proton Lumo | Psono |
|---|---|---|
| Flat-Rate Small Business Pricing pricing | Supported Transparent SMB pricing | Supported No per-seat enterprise lock-in |
| Full API & Webhooks developer | Supported Cloud API & integrations | Supported Open API & webhooks |
| Self-Hostable / Open Source infrastructure | Not Included | Supported Open Source (APACHE-2) self-hostable |
Official Published USD Pricing Tiers
Verified plan structure for Proton Lumo and Psono.
Proton Lumo Plans USD Verified
Free / Starter Plan
monthly
Business Cloud Plan
monthly
Psono Plans USD Verified
Open Source / Self-Hosted
monthly
Managed Cloud Pro
monthly
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Frequently Asked Questions
Key pricing, quota, migration, and security answers for Proton Lumo vs Psono.
What is the main difference between Proton Lumo and Psono in 2026?
Proton Lumo (Free / $14/mo Business Cloud Plan, billed by developer seat / credits) is best suited for: Alternative to Claude, ChatGPT, Gemini — Privacy-first AI assistant with zero-access encryption that doesn't track or re By contrast, Psono (Free / $19/mo Managed Cloud Pro, billed by developer seat / credits) is best for: Alternative to 1Password, Proton Pass, more — Team-focused password manager with client-side encryption, SAML, LDAP, aud
How do Proton Lumo and Psono compare on free tiers and USD pricing?
Proton Lumo: Proton Lumo Free / Starter Plan tier (core ai coding & developer tools capabilities); Business Cloud Plan upgrades start at $14/mo. Psono: Psono is self-hostable (Open Source (APACHE-2)) with managed Managed Cloud Pro cloud starting at $19/mo. Always compare based on your real workload metric (Developer Seat / Credits vs Developer Seat / Credits) rather than headline base tier alone.
What proprietary feature limits or overages should founders watch out for?
On Proton Lumo: Proton Lumo tier notes — Flat-Rate Small Business Pricing: Transparent SMB pricing; Full API & Webhooks: Cloud API & integrations. On Psono: Psono tier notes — Flat-Rate Small Business Pricing: No per-seat enterprise lock-in; Full API & Webhooks: Open API & webhooks.
How difficult is migrating from Psono to Proton Lumo, and what compliance is supported?
Estimated migration effort to Proton Lumo is Low (< 30 mins) (Configure Proton Lumo (Flat-Rate Small Business Pricing, Full API & Webhooks) and import existing ai coding & developer tools records). Security & data governance signals for Proton Lumo include GDPR / CCPA Ready, Flat-Rate Small Business, Transparent USD Pricing, while Psono offers Open Source / Self-Host, GDPR / CCPA Ready, Flat-Rate Small Business.
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