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Auth0 vs Spline: 2026 Comparison

Auth0 Spline
Overview A flexible authentication and authorization platform for building secure login experiences with social, passwordless, and MFA support. A free 3D design tool for creating interactive web experiences with real-time collaboration and easy embedding.
Pricing Freemium (Free-$23/1K MAU) Freemium (Free-$36/month)
Key Features
  • Universal Login
  • Social connections
  • MFA
  • Passwordless
  • SSO
  • RBAC
  • Breached password detection
  • Extensibility
  • 3D modeling
  • Real-time collaboration
  • Web embedding
  • Interactions
  • Animation
  • Materials
  • Physics
  • Export to code
Pros
  • Comprehensive auth solution
  • Many social providers
  • Good documentation
  • Flexible rules
  • Free plan available
  • Easy to learn
  • Web-native 3D
  • Real-time collaboration
Cons
  • Expensive at scale
  • Complex pricing
  • Can be overkill
  • Okta acquisition concerns
  • Limited advanced modeling
  • Performance with complex scenes
  • Newer platform
  • Export limitations on free plan