Auth0 vs Duo Security Pricing (2026)
How do these two stack up on price? Here's what each one costs, what you get, and where the value sits.
| Auth0 | Duo Security | |
|---|---|---|
| Starts at | $35/mo | $3/mo |
| Number of plans | 4 | 4 |
| Free plan | ||
| Free trial | ||
| Pricing model | usage-based | per-seat |
Free
- 1 Custom Domain*
- Secure Agentic AI workflows
- Passwordless Authentication
- Unlimited Social Connections**
- 5 Organizations
- Brand Customization
- Basic Attack Protection
- Community Support
- 1 Enterprise Connection
- Self-Service SSO
- SCIM
Essentials
- Higher Auth, API limits, and Feature limits
- Pro Multi-Factor Authentication
- Role-based Access Control Per Organization
- 10 Organizations (How we model your customers)
- Stream Auth0 Audit Logs to Datadog, Splunk, AWS, Azure, etc.
- Separate Production & Development Environments
- Standard Support
Professional
- Use your existing User Database for Logins
- Enterprise Multi-Factor Authentication
- Enhanced Attack Protection
- M2M Tokens
Enterprise
- Custom User & SSO Tiers
- 99.99% SLA
- Enterprise Rate Limits
- Enterprise Administration & Support
- Advanced Security Features
- Private Deployment
Duo Free
- Add up to 10 users
- Strong MFA
- Seamless integrations
- Free authenticator app
Duo Essentials
- Duo Directory
- Phishing-resistant MFA
- Complete passwordless authentication
- Single sign-on
- Trusted Endpoints
- Unlimited applications
Duo Advantage
Popular- Cisco Identity Intelligence (Cross-identity visibility, ISPM, and ITDR)
- Duo Passport
- Session theft protection
- Active Directory Defense
- Risk-Based Authentication
Duo Premier
- A comprehensive package for complete Zero Trust access
- VPN-less remote access to private resources
- Complete device trust with endpoint protection check
Auth0 vs Duo Security FAQ
- Which one is cheaper?
- Duo Security is the cheaper option, starting at $3/mo vs $35/mo for Auth0.
- Can I use either one for free?
- Both offer free plans, so you can try each without paying. Start with whichever fits your workflow better and upgrade when you hit the limits.
- How do they charge?
- Different approach here. Auth0 uses usage-based pricing, while Duo Security goes with per-seat. That changes the math depending on your team size and usage.
- Which one is a better deal?
- Depends on what you need. Auth0: Auth0 sits in the premium tier of the identity-as-a-service space, competing directly with Okta (which owns them), Firebase Auth, and Clerk. They're not the cheapest option — Clerk and Firebase undercut them at lower MAU counts — but they're selling on compliance depth, extensibility, and brand trust with enterprise buyers. Duo Security: At $3–$9/user/month, Duo sits in the affordable-to-mid range for identity security — well below Okta's MFA add-ons and competitive with Microsoft Authenticator bundles for orgs not already in the M365 ecosystem. They're clearly targeting security-conscious SMBs and mid-market teams that want enterprise-grade MFA without enterprise-grade pricing.
Keep tabs on both.
We'll monitor pricing changes for Auth0 and Duo Security and let you know when something moves.