Firebase Authentication Pricing 2026
Plans, hidden costs, and alternatives compared
Cite this data: Toolradar, Firebase Authentication pricing verified Oct 2026, toolradar.com/tools/firebase-auth/pricing
Firebase Authentication uses custom pricing.
Verified Oct 2026. No official public pricing page; Toolradar is the public record.
Is Firebase Authentication worth the price?
Firebase Authentication's Spark plan is incredibly generous, offering 50,000 MAU for free, which is far more than many competitors.
The Blaze plan is pay-as-you-go, making it fair for scaling, though phone authentication costs $0.01-$0.06 per verification can add up. This pricing is excellent for startups and developers needing robust authentication without upfront costs.
Pricing Plans
Spark (Free)
Free
- 50,000 MAU
- All auth methods
- Basic features
Blaze (Pay as you go)
Custom
- Unlimited MAU
- Phone auth: $0.01-0.06/verification
- Advanced features
Hidden Costs & Gotchas
Phone verification costs $0.01-$0.06 each.
How Firebase Authentication compares
3 of 4 direct competitors offer a free plan.
Firebase Authentication Pricing FAQ
How much does Firebase Authentication cost?
Firebase Authentication uses custom pricing. Contact Firebase Authentication directly for a quote based on your team size and requirements.
Does Firebase Authentication have a free plan?
Yes. Firebase Authentication offers a free plan called "Spark (Free)". It includes: 50,000 MAU, All auth methods, Basic features.
What are alternatives to Firebase Authentication?
Alternatives to Firebase Authentication include Auth0, Clerk, Keycloak, Okta. Keycloak is fully free. Auth0 starts at $35/month, billing unit not specified; Clerk starts at $1.67/month, billing unit not specified; Okta starts at $6/user/month.
Firebase Authentication alternatives
Direct competitors. Starting prices match the table above.
Sources
- No official public pricing page for Firebase Authentication. Figures verified Oct 2026 by Toolradar.
- Cite this data: Toolradar, Firebase Authentication pricing verified Oct 2026, toolradar.com/tools/firebase-auth/pricing
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