Firebase Authentication

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

Microsoft Entra ID vs Firebase Authentication: Full Comparison (2026)

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

The bottom line

Microsoft Entra ID positions itself as "microsoft entra id" while Firebase Authentication goes after "google-backed auth with generous free tier for mobile and web" — so the right pick depends on which problem you're actually solving. Both use freemium pricing, but Microsoft Entra ID charges per seat while Firebase Authentication charges per mau — a meaningful difference for larger teams.

At a glance

	Microsoft Entra ID	Firebase Authentication
Our score	84/100	76/100
Starting price	Free	Free
Free tier	Yes	Yes
Best for	Microsoft Entra ID	Google-backed auth with generous free tier for mobile and web

Pricing comparison

Microsoft Entra ID

Free tier available

FreeFree

P1$6/mo

P2$9/mo

Pricing verified 2026-04-16

Firebase Authentication

Free tier available

Spark (Free)Free

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

Pricing verified 2026-04-16

Calculate your cost

How many developers?10

1500

Microsoft Entra IDCustom

Contact sales

Contact sales — exceeds available plans

Firebase AuthenticationUnknown

Contact sales

Try Microsoft Entra ID free →Try Firebase Authentication free →

Feature comparison

core

Feature	Microsoft Entra ID	Firebase Authentication
SSO	Yes	No
MFA	Yes	No
Conditional Access	Yes	No
SCIM provisioning	Yes	No
Azure app integration	Yes	No
Email/password	No	Yes
Google OAuth	No	Yes
Apple OAuth	No	Yes
Phone SMS	No	Yes
Anonymous auth	No	Yes

advanced

Feature	Microsoft Entra ID	Firebase Authentication
Identity Protection	Yes	No
Privileged Identity Management	Yes	No
Access reviews	Yes	No
Verified ID	Yes	No
Workload identity	Yes	No
Multi-tenancy	No	Blaze
SAML SSO	No	Blaze ($0.015/MAU)
Custom claims	No	Yes
App Check	No	Yes
Blocking functions	No	Yes

integrations

Feature	Microsoft Entra ID	Firebase Authentication
Microsoft 365	Yes	No
Azure	Yes	No
Salesforce	Yes	No
AWS	Yes	No
Okta	Yes	No
Firebase (all products)	No	Yes
Google Cloud	No	Yes
Flutter	No	Yes
Android/iOS SDKs	No	Yes
Web SDK	No	Yes

Ratings breakdown

Microsoft Entra ID

Ease of use

7/10

Value for money

10/10

Features

9/10

Support

8/10

Firebase Authentication

Ease of use

8/10

Value for money

9/10

Features

7/10

Support

6/10

What the data tells us

Key capabilities you'd miss

Choosing Microsoft Entra ID means going without Email/password, Google OAuth, Apple OAuth (which Firebase Authentication offers). Choosing Firebase Authentication means losing SSO, MFA, Conditional Access. 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

Microsoft Entra ID (10000+ 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 Microsoft Entra ID if...

You want a free tier to get started
You value powerful features over simplicity
Getting strong value for money is a priority

Try Microsoft Entra ID free →

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 →

Frequently asked questions

Is Microsoft Entra ID or Firebase Authentication better?

Microsoft Entra ID scores 84/100 compared to Firebase Authentication's 76/100 on VendorVS. However, the best choice depends on your needs — Microsoft Entra ID excels at ease of use (7/10) while Firebase Authentication scores 8/10.

How much does Microsoft Entra ID cost compared to Firebase Authentication?

Microsoft Entra ID starts at free (free tier available). Firebase Authentication starts at free (free tier available). Microsoft Entra ID is the more affordable option.

Does Microsoft Entra ID or Firebase Authentication have a free plan?

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

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