Firebase Authentication

Google-backed auth with generous free tier for mobile and web

Firebase Authentication vs Onfido: Full Comparison (2026)

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

The bottom line

Firebase Authentication positions itself as "google-backed auth with generous free tier for mobile and web" while Onfido goes after "real identity at global scale" — so the right pick depends on which problem you're actually solving. They take different commercial approaches — Firebase Authentication uses a freemium approach and Onfido a enterprise-based model, which affects how costs scale as your team grows. Firebase Authentication lets you start for free, which means you can validate the fit before committing budget. Onfido requires a paid commitment upfront, so make sure it matches your workflow before signing.

At a glance

	Firebase Authentication	Onfido
Our score	76/100	79/100
Starting price	Free	Free
Free tier	Yes	No
Best for	Google-backed auth with generous free tier for mobile and web	Real identity at global scale

Pricing comparison

Firebase Authentication

Free tier available

Spark (Free)Free

Blaze (Pay-as-you-go)$null/mo

Pricing verified 2026-04-16

Onfido

No free tier

Growth$null/mo

Enterprise$null/mo

Pricing verified 2026-04-16

Calculate your cost

How many developers?10

1500

Firebase AuthenticationUnknown

Contact sales

OnfidoUnknown

Contact sales

Try Firebase Authentication free →Visit Onfido →

Feature comparison

core

Feature	Firebase Authentication	Onfido
Email/password	Yes	No
Google OAuth	Yes	No
Apple OAuth	Yes	No
Phone SMS	Yes	No
Anonymous auth	Yes	No
ID document verification	No	Yes
Biometric verification	No	Yes
Liveness detection	No	Yes
160+ countries	No	Yes
KYC workflows	No	Yes

advanced

Feature	Firebase Authentication	Onfido
Multi-tenancy	Blaze	No
SAML SSO	Blaze ($0.015/MAU)	No
Custom claims	Yes	No
App Check	Yes	No
Blocking functions	Yes	No
Atlas AI	No	Yes
AML screening	No	Yes
Fraud signals	No	Yes
Studio (no-code)	No	Yes
Real Identity Platform	No	Yes

integrations

Feature	Firebase Authentication	Onfido
Firebase (all products)	Yes	No
Google Cloud	Yes	No
Flutter	Yes	No
Android/iOS SDKs	Yes	No
Web SDK	Yes	No
Salesforce	No	Yes
Zendesk	No	Yes
Plaid	No	Yes
Stripe Identity	No	Yes
REST API	No	Yes

Ratings breakdown

Firebase Authentication

Ease of use

8/10

Value for money

9/10

Features

7/10

Support

6/10

Onfido

Ease of use

7/10

Value for money

6/10

Features

9/10

Support

8/10

What the data tells us

Key capabilities you'd miss

Choosing Firebase Authentication means going without ID document verification, Biometric verification, Liveness detection (which Onfido offers). Choosing Onfido means losing Email/password, Google OAuth, Apple OAuth. 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

Onfido (501-1000 employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. Firebase Authentication (100,000+ employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.

Choose Firebase Authentication if...

You want a free tier to get started
You value an intuitive, easy-to-use interface
Getting strong value for money is a priority

Try Firebase Authentication free →

Choose Onfido if...

You're ready to invest from $null/mo
You value powerful features over simplicity
You need enterprise-grade capabilities

Visit Onfido →

Frequently asked questions

Is Firebase Authentication or Onfido better?

Onfido scores 79/100 compared to Firebase Authentication's 76/100 on VendorVS. However, the best choice depends on your needs — Firebase Authentication excels at ease of use (8/10) while Onfido scores 7/10.

How much does Firebase Authentication cost compared to Onfido?

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

Does Firebase Authentication or Onfido have a free plan?

Firebase Authentication offers a free tier. Onfido does not — its cheapest plan starts at $null/mo.

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