2,500
- Spark
- $0
- Blaze
- $0
FA
authentication pricing
by Google
Firebase Auth pricing, plans & costs
Firebase Authentication — Google's drop-in auth for mobile and web apps.
- Starts at
- Free
- Free plan
- Yes
- Plans
- 2
- Billed by
- MAUs
Plans at a glance
Firebase Auth plans and prices
Estimated from public pricing
Cost calculator
Firebase Auth cost calculator
25K
Blaze estimate
$0/mo
$0/mo, 50K MAUs included, then $0.0055 per MAU
Estimate covers the main usage meter only; taxes and add-ons are excluded.
Firebase Auth plans at 25K
vs alternatives (cheapest plan)
How much does Firebase Auth cost per month?
| 2,500 | $0 | $0 |
|---|---|---|
| 12.5K | $0 | $0 |
| 25K | $0 | $0 |
| 125K | — | $413 |
| 500K | — | $2,475 |
12.5K
- Spark
- $0
- Blaze
- $0
25K
- Spark
- $0
- Blaze
- $0
125K
- Spark
- —
- Blaze
- $413
500K
- Spark
- —
- Blaze
- $2,475
Cheapest plan per volume highlighted. "—" means the plan does not allow that volume.
Firebase Auth plan feature comparison
| Audit logs | Cloud Logging | Cloud Logging |
|---|---|---|
| Branding & custom domain | Basic | Custom domain |
| Enterprise SSO (SAML) | Not included | $0.015/MAU |
| MFA / passkeys | SMS MFA (Blaze) | SMS + TOTP |
| Monthly active users | 50,000 MAUs | 50K free, then from $0.0055 |
| Organizations / B2B | Multi-tenancy (Blaze) | Multi-tenancy |
| Social login | Google, Apple, GitHub… | Unlimited |
| Support | Community | Google Cloud support |
Audit logs
- Spark
- Cloud Logging
- Blaze
- Cloud Logging
Branding & custom domain
- Spark
- Basic
- Blaze
- Custom domain
Enterprise SSO (SAML)
- Spark
- Not included
- Blaze
- $0.015/MAU
MFA / passkeys
- Spark
- SMS MFA (Blaze)
- Blaze
- SMS + TOTP
Monthly active users
- Spark
- 50,000 MAUs
- Blaze
- 50K free, then from $0.0055
Organizations / B2B
- Spark
- Multi-tenancy (Blaze)
- Blaze
- Multi-tenancy
Social login
- Spark
- Google, Apple, GitHub…
- Blaze
- Unlimited
Support
- Spark
- Community
- Blaze
- Google Cloud support
How Firebase Auth pricing works
Firebase Auth (Identity Platform) is free up to 50,000 MAUs for standard providers; SAML/OIDC and above-quota MAUs are billed per user.
- Phone auth SMS billed per message by country.
- SAML/OIDC users: 50 free MAUs then $0.015/MAU.
Firebase Auth is best for
Mobile apps
Firebase ecosystem
Anonymous and phone auth
Firebase Auth alternatives
Firebase Auth pricing FAQ
Source: official Firebase Auth pricing page. Estimated. Prices change — confirm before buying.