Auth & Identity

Clerk vs Firebase Auth Pricing

Q: Which is cheaper, Clerk or Firebase Auth?

Depends on how much you use. At hobby scale they're often close, but the gap widens fast. Scroll up to "What You'd Actually Pay" to see costs at 4 usage levels.

Q: Does Clerk or Firebase Auth have a free tier?

Yes, both Clerk and Firebase Auth have free tiers. Check the breakdown above to see what's included in each.

Q: How does Clerk pricing compare to Firebase Auth?

We pull prices directly from both sites daily and break them down per-unit above. The cost calculator shows what you'd pay at your usage level -- from side project to production.

Pricing compared · Updated Mar 4, 2026

Clerk Firebase Auth

Pricing Breakdown

Metric	Clerk	Firebase Auth
Monthly Base	Free	Free
Per MAU	—	—
MAU Included	10,000	50
SSO	No	No
MFA	Yes	No

What You'd Actually Pay

Monthly cost at 4 usage levels -- from hobby project to production

Usage Tier	Clerk	Firebase Auth	Savings
Hobby 500 MAU	<$0.01/mo	<$0.01/mo	—
Startup 5K MAU	<$0.01/mo	<$0.01/mo	—
Scale 50K MAU	<$0.01/mo	<$0.01/mo	—
Enterprise 500K MAU	<$0.01/mo	<$0.01/mo	—

Free Tiers

Clerk

Up to 10,000 MAU free

Free tier available

Firebase Auth

Spark plan: 50,000 MAU/month free for email/password and social. Phone auth: 10K SMS verifications/month free.

Free tier available

FAQ

Which is cheaper, Clerk or Firebase Auth?▾

Depends on how much you use. At hobby scale they're often close, but the gap widens fast. Scroll up to "What You'd Actually Pay" to see costs at 4 usage levels.

Does Clerk or Firebase Auth have a free tier?▾

Yes, both Clerk and Firebase Auth have free tiers. Check the breakdown above to see what's included in each.

How does Clerk pricing compare to Firebase Auth?▾

We pull prices directly from both sites daily and break them down per-unit above. The cost calculator shows what you'd pay at your usage level -- from side project to production.

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