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Ably vs Auth0: 2026 Comparison

Ably Auth0
Overview A realtime messaging infrastructure platform providing pub/sub, presence, and stream processing for applications at scale. A flexible authentication and authorization platform for building secure login experiences with social, passwordless, and MFA support.
Pricing Freemium (Free-$99/month) Freemium (Free-$23/1K MAU)
Key Features
  • Pub/sub messaging
  • Presence
  • Stream processing
  • Webhooks
  • MQTT support
  • Message queuing
  • History
  • Global edge network
  • Universal Login
  • Social connections
  • MFA
  • Passwordless
  • SSO
  • RBAC
  • Breached password detection
  • Extensibility
Pros
  • Enterprise-grade reliability
  • Global edge network
  • Protocol support
  • Good documentation
  • Comprehensive auth solution
  • Many social providers
  • Good documentation
  • Flexible rules
Cons
  • Can be expensive
  • Complex pricing
  • Smaller community
  • Learning curve
  • Expensive at scale
  • Complex pricing
  • Can be overkill
  • Okta acquisition concerns