Auth0 vs Duo Security: Identity & Access Management Comparison (2026)
Auth0 is suitable for projects requiring extensive customization and flexible authentication options, including passwordless and social connections, with a generous free tier for up to 25,000 users. Duo Security is better for organizations prioritizing strong multi-factor authentication, risk-based authentication, and trusted endpoint security across unlimited applications, with clear pricing per user.
AI Citation Scorecard
How often each is cited by major AI engines when buyers ask identity & access management questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
- ✓1 Custom Domain
- ✓Passwordless Authentication
- ✓Unlimited Social Connections
- ✓Brand Customization
- ✓Basic Attack Protection
- ✓Community Support
- ✓Self-Service SSO
- ✓SCIM
- ✓Strong MFA
- ✓Seamless integrations
- ✓Single sign-on
- ✓Unlimited applications
- ✓Risk-Based Authentication
- ✓Complete passwordless authentication
- ✓Session theft protection
- ✓Trusted Endpoints
When to choose Auth0
Auth0 is a better choice when the priority is flexible identity management with features like custom domains, passwordless authentication, unlimited social connections, and brand customization. It also supports up to 25,000 users for free, making it suitable for projects with potentially large user bases starting out.
When to choose Duo Security
Duo Security is a better choice when the primary need is robust multi-factor authentication (MFA), risk-based authentication, and trusted endpoint security across all applications. Its per-user pricing model and features like complete passwordless authentication and session theft protection are ideal for organizations focused on strong access security.