Firebase Authentication Pricing 2026
Plans, costs, and free options for Firebase Authentication
Last updated: January 22, 2026
TL;DR: Firebase Authentication Pricing
Pricing Model
Freemium
Starting Price
Contact sales
Free Option
Yes ✓
Freemium
Pricing Model
Firebase Authentication offers a free tier with basic features, plus paid plans for users who need more advanced functionality.
Free Tier Available
Basic features included at no cost
Paid Upgrades
Premium features with paid plans
Available 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
Firebase Authentication vs Competitors: Pricing Comparison
See how Firebase Authentication pricing compares to similar tools in Developer Tools
| Tool | Free Tier | Starting Price | Score | |
|---|---|---|---|---|
Firebase AuthenticationCurrent Backend authentication by Google | Yes | — | —/100 | Details → |
 Gemini CLI Open source AI coding agent powered by G... | Yes | — | —/100 | Pricing → |
 Codex CLI OpenAI official terminal coding agent | No | $20/mo | —/100 | Pricing → |
Airplane Internal tools and workflows platform | Yes | $30/user/month | —/100 | Pricing → |
RelateDBBest Value Free, offline-first, browser-based ERD s... | Yes | Free | —/100 | Pricing → |
 ADB Wrench Browser-based Android debugging tool for... | Yes | Free | —/100 | Pricing → |
 1Code Open-source client for parallel work wit... | Yes | $20/mo | —/100 | Pricing → |
Prices shown are starting prices. Actual pricing may vary based on features and team size.
See all alternatives →Firebase Authentication Pricing FAQ
How much does Firebase Authentication cost?
Firebase Authentication offers the following plans: Spark (Free) (Free), Blaze (Pay as you go) (null). A free tier is available.
Is there a free version of Firebase Authentication?
Yes, Firebase Authentication offers a free Spark (Free) plan that includes 50,000 MAU, All auth methods, Basic features.
Does Firebase Authentication offer a free trial?
Check Firebase Authentication's official website for current trial offers.
What are cheaper alternatives to Firebase Authentication?
Free or freemium alternatives include Gemini CLI, Airplane, RelateDB. View our full comparison to find the best value.
Is Firebase Auth free?
Yes, Firebase Auth is free for up to 50,000 monthly active users for most auth methods. Phone auth has separate pricing.