Firebase Authentication Pricing 2026
Plans, hidden costs, and cheaper alternatives compared
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)
- Unlimited MAU
- Phone auth: $0.01-0.06/verification
- Advanced features
Hidden Costs & Gotchas
Phone verification costs $0.01-$0.06 each.
Exceeding free MAU moves to Blaze.
Other Firebase services have separate costs.
Which Plan Do You Need?
Startups & small projects
Rapid prototyping
Apps needing scalable auth
How Firebase Authentication Compares to Competitors
Compared to Auth0, which has a free tier for up to 7,000 MAU, Firebase's 50,000 MAU free tier is significantly more generous. Okta's pricing is often enterprise-focused and less transparent for small-scale use, making Firebase a much more accessible and cost-effective option for many developers.
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.
Is there a cheaper alternative to Firebase Authentication?
Yes. Popular alternatives to Firebase Authentication include Auth0, Ory, Stytch, Logto. Free alternatives include Auth0, Ory, Stytch. Compare them side-by-side on Toolradar.
Cheaper alternatives to Firebase Authentication
Direct competitors with similar features. Many offer free tiers or lower per-seat pricing.
