Auth0

Enterprise authentication and identity platform

Auth0 vs Firebase: Full Comparison (2026)

Pricing, features, scores, and a clear verdict on which one is right for you.

The bottom line

Auth0 positions itself as "enterprise authentication and identity platform" while Firebase goes after "google's mobile-first backend platform" — so the right pick depends on which problem you're actually solving. Both use freemium pricing, but Auth0 charges per mau while Firebase charges per operation — a meaningful difference for larger teams.

At a glance

	Auth0	Firebase
Our score	79/100	80/100
Starting price	Free	Free
Free tier	Yes	Yes
Best for	Enterprise authentication and identity platform	Google's mobile-first backend platform

Pricing comparison

Auth0

Free tier available

FreeFree

Essentials$35/mo

Professional$240/mo

Pricing verified 2026-04-16

Firebase

Free tier available

Spark (Free)Free

Blaze (Pay-as-you-go)Free

Pricing verified 2026-04-16

Calculate your cost

How many developers?10

1500

Auth0Unknown

Contact sales

FirebaseUnknown

Contact sales

Try Auth0 free →Try Firebase free →

Feature comparison

core

Feature	Auth0	Firebase
OAuth 2.0 / OIDC	Yes	No
Social login	Yes	No
MFA	Yes	No
Custom domains	Essentials+	No
Passwordless	Yes	No
Firestore (NoSQL)	No	Yes
Realtime Database	No	Yes
Authentication	No	Yes
Storage	No	Yes
Hosting	No	Yes

advanced

Feature	Auth0	Firebase
SAML 2.0	Professional+	No
LDAP/AD	Professional+	No
SCIM provisioning	Enterprise	No
Fine-grained auth	Enterprise	No
HIPAA BAA	Enterprise	No
Cloud Functions	No	Blaze
App Check	No	Yes
Remote Config	No	Yes
Analytics	No	Yes
Crashlytics	No	Yes

integrations

Feature	Auth0	Firebase
Next.js	Yes	Yes
React	Yes	No
Salesforce	Yes	No
Okta Workflows	Yes	No
Zapier	Yes	No
Google Cloud	No	Yes
Android	No	Yes
Flutter	No	Yes
Unity	No	Yes
React Native	No	Yes

Ratings breakdown

Auth0

Ease of use

7/10

Value for money

6/10

Features

9/10

Support

8/10

Firebase

Ease of use

8/10

Value for money

7/10

Features

9/10

Support

7/10

What the data tells us

Key capabilities you'd miss

Choosing Auth0 means going without Firestore (NoSQL), Realtime Database, Authentication (which Firebase offers). Choosing Firebase means losing OAuth 2.0 / OIDC, Social login, MFA. These are the features that typically drive the final decision — check whether your workflow depends on any of them before committing.

What company size tells you

Firebase (10,000+ employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. Auth0 (1,000+ employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.

Choose Auth0 if...

You want a free tier to get started
You value powerful features over simplicity
You need enterprise-grade capabilities

Try Auth0 free →

Choose Firebase if...

You want a free tier to get started
You value an intuitive, easy-to-use interface
You need enterprise-grade capabilities

Try Firebase free →

Frequently asked questions

Is Auth0 or Firebase better?

Firebase scores 80/100 compared to Auth0's 79/100 on VendorVS. However, the best choice depends on your needs — Auth0 excels at ease of use (7/10) while Firebase scores 8/10.

How much does Auth0 cost compared to Firebase?

Auth0 starts at free (free tier available). Firebase starts at free (free tier available). Auth0 is the more affordable option.

Does Auth0 or Firebase have a free plan?

Yes, both Auth0 and Firebase offer free tiers, so you can try each before committing to a paid plan.

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