Firebase Authentication pricing (2026)
Plans, free tier and how Firebase Authentication's price stacks up against 10 other tools in Auth. Verified from official pricing pages.
Current pricing
No-cost Spark plan; with Identity Platform, no-cost up to 50K MAU (50 MAU for SAML/OIDC), then Google Cloud pricing; phone verification SMS is Blaze (pay-as-you-go) only and billed per SMS
- Free tier
- Yes: no-cost on the Spark plan; with Identity Platform free up to 50K MAU (Spark caps Identity Platform at 3,000 daily active users, and password-reset emails at 150/day)
- Value score
- 13 / 15
- Value rank
- #8 of 11 in Auth
- Overall score
- 74 / 100
Sources: firebase.google.com/pricing · firebase.google.com/docs/auth/limits
How Firebase Authentication's price compares in Auth
Sorted by our pricing and free-tier score (out of 15), then overall score. Click a tool for its own pricing page.
| Tool | Value | Free tier | Score | Pricing |
|---|---|---|---|---|
| Better Auth | 15 | Yes | 86 | Library free; optional Infrastructure Pro $20/mo |
| Auth.js (NextAuth.js) | 15 | Yes | 73 | Free (ISC open source); you host it and pay only for your own database |
| Hanko | 14 | Yes | 78 | Starter free up to 10,000 MAU; Pro $29/mo plus $0.01 per MAU over 10,000; Enterprise custom; startup plan with 1M free MAU on application |
| WorkOS | 14 | Yes | 78 | SSO/Directory Sync $125/connection/mo (volume discounts) |
| Kinde | 14 | Yes | 76 | Free $0 (10,500 MAU); Pro $25/mo (10,500 MAU included, then $0.0175 per extra MAU); Plus $75/mo (free enterprise SSO); Scale $250/mo; billing customers through Kinde adds 0.5–0.7% per transaction (0.7% Free/Pro, 0.6% Plus, 0.5% Scale), and those billed users' MAU is free |
| Clerk | 13 | Yes | 87 | Pro $25/mo ($20 annual), then $0.02/MRU over 50K |
| Supabase Auth | 13 | Yes | 85 | Included in Supabase plans: Free $0 (50,000 MAU); Pro from $25/mo (100,000 MAU, then $0.00325 per MAU); Team from $599/mo; Enterprise custom. Advanced phone MFA, SAML SSO and leaked-password protection are paid features |
| Firebase Authentication(this page) | 13 | Yes | 74 | No-cost Spark plan; with Identity Platform, no-cost up to 50K MAU (50 MAU for SAML/OIDC), then Google Cloud pricing; phone verification SMS is Blaze (pay-as-you-go) only and billed per SMS |
| Stytch | 12 | Yes | 68 | Usage-based above free allowance; SSO/SCIM $125/connection |
| Auth0 | 11 | Yes | 70 | Essentials from $35/mo (B2C, 500 MAU) or $150/mo (B2B) |
| Descope | 11 | Yes | 70 | Free Forever $0 (7,500 MAU, 10 tenants, 3 SSO connections, hard limits); Pro from $249/mo billed annually (10,000 MAU, then $0.05/MAU); Growth from $799/mo (25,000 MAU); Enterprise custom |
Cheaper or free alternatives to Firebase Authentication
- Better Auth
Value 15/15 · score 86
Yes: MIT library free to self-host; Infrastructure Starter $0
Better Auth pricing → - Auth.js (NextAuth.js)
Value 15/15 · score 73
Yes: fully free and open source, no per-user fees
Auth.js (NextAuth.js) pricing → - Hanko
Value 14/15 · score 78
Yes: 10,000 monthly active users and 2 projects on Hanko Cloud, or self-host free
Hanko pricing →
Pricing history on PromptToProd
- Auth grows to 10 tools + auth guide for vibe-coded apps: Added · score 74 · Auth
- Pricing last verified: No-cost Spark plan; with Identity Platform, no-cost up to 50K MAU (50 MAU for SAML/OIDC), then Google Cloud pricing; phone verification SMS is Blaze (pay-as-you-go) only and billed per SMS
- Started tracking Firebase Authentication.
We re-check pricing pages regularly and log every change on the changelog.
FAQ
- How much does Firebase Authentication cost in 2026?
- Firebase Authentication pricing as of 2026-10-24: No-cost Spark plan; with Identity Platform, no-cost up to 50K MAU (50 MAU for SAML/OIDC), then Google Cloud pricing; phone verification SMS is Blaze (pay-as-you-go) only and billed per SMS. Plans change, so confirm on the official site.
- Is Firebase Authentication free?
- Yes. Firebase Authentication free tier: no-cost on the Spark plan; with Identity Platform free up to 50K MAU (Spark caps Identity Platform at 3,000 daily active users, and password-reset emails at 150/day).
- Is Firebase Authentication good value?
- Firebase Authentication scores 13/15 on PromptToProd's pricing and free-tier criterion, #8 of 11 in Auth on value, and 74/100 overall.
- What are cheaper or free alternatives to Firebase Authentication?
- In Auth, tools with a free tier and an equal or better pricing score include Better Auth (15/15, score 86), Auth.js (NextAuth.js) (15/15, score 73), Hanko (14/15, score 78).
- When was Firebase Authentication pricing last checked?
- We last verified Firebase Authentication's pricing on 2026-10-24 from its official pricing page and docs.
Read the full Firebase Authentication review and score breakdown →
For the Firebase Authentication team
Pricing changed? Tell us and we'll re-verify for free. Want more reach? Get a labeled Featured card at the top of Auth; scores never change.