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Auth0 vs Rebuy: 2026 Comparison

Auth0 Rebuy
Overview A flexible authentication and authorization platform for building secure login experiences with social, passwordless, and MFA support. An AI-powered personalization engine for Shopify stores offering smart product recommendations, upsells, and cross-sells.
Pricing Freemium (Free-$23/1K MAU) Subscription ($99-$749/month)
Key Features
  • Universal Login
  • Social connections
  • MFA
  • Passwordless
  • SSO
  • RBAC
  • Breached password detection
  • Extensibility
  • AI recommendations
  • Smart cart
  • Post-purchase upsells
  • Checkout extensions
  • Data-driven merchandising
  • A/B testing
  • Dynamic bundles
  • Reorder landing pages
Pros
  • Comprehensive auth solution
  • Many social providers
  • Good documentation
  • Flexible rules
  • Powerful AI personalization
  • Revenue-driving features
  • Good Shopify integration
  • Smart cart functionality
Cons
  • Expensive at scale
  • Complex pricing
  • Can be overkill
  • Okta acquisition concerns
  • Shopify only
  • Expensive
  • Requires traffic for AI to work well
  • Setup complexity