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Home/Compare/Auth0 vs Firebase

Auth0 vs Firebase

A side-by-side comparison of pricing, plans, and recent product updates. Pricing data last refreshed May 14, 2026.

Auth0

Authentication and authorization platform.

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Category
auth
Plans tracked
4
Entry price
$35/mo
Free plan?
Yes
See full Auth0 pricing & changelog →

Firebase

Backend primitives for mobile and web apps.

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Category
database
Plans tracked
—
Entry price
—
Free plan?
—
See full Firebase pricing & changelog →

Plan-by-plan pricing

Auth0

Free

Auth0

Free
  • Up to 25,000 monthly active users
  • 1 Custom Domain*
  • Secure Agentic AI workflows
  • Passwordless Authentication
  • Unlimited Social Connections**
  • + 1 more

Essentials

Auth0

$35/mo
  • Up to 500 monthly active users
  • Everything in Free, plus...
  • Higher Auth, API limits, and Feature limits
  • Pro Multi-Factor Authentication
  • Role-based Access Control Per Organization
  • + 1 more

Professional

Auth0

$240/mo
  • Up to 500 monthly active users
  • Everything in Essentials, plus...
  • Use your existing User Database for Logins
  • Enterprise Multi-Factor Authentication
  • Enhanced Attack Protection
  • + 1 more

Enterprise

Auth0

Custom
  • Everything in Professional plus...
  • Custom User & SSO Tiers
  • 99.99% SLA
  • Enterprise Rate Limits
  • Enterprise Administration & Support
  • + 1 more

Firebase

Pricing data is being collected.

Auth0 vs Firebase FAQ

Auth0 vs Firebase: which is cheaper?
Auth0 starts at $35/mo, while Firebase starts at an unpublished tier. TrackRival snapshots both daily as plan pages change.
Does Auth0 or Firebase have a free plan?
Auth0 shows a free plan in the latest snapshot, while Firebase does not.
Is Auth0 a good auth alternative to Firebase?
Auth0 is tracked in auth, while Firebase overlaps for similar buyers. Use the changelog section below to compare shipping cadence before you choose.
How often is this Auth0 vs Firebase comparison updated?
TrackRival refreshes pricing snapshots daily and appends new changelog entries whenever either product ships a release.

Which should you pick?

Both Auth0 and Firebase serve overlapping audiences (Auth0 in auth, Firebase in database).

  • Choose Auth0 if you value: authentication and authorization platform.
  • Choose Firebase if you value: backend primitives for mobile and web apps.
  • Subscribe to TrackRival if you want to be notified whenever either of them changes pricing or ships a major update — so you can react before your competitors do.

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