Firebase Authentication vs WorkOS pricing
Both are in authentication & identity apis. Firebase Authentication is billed mau-based (+ per-sms); WorkOS is billed per connection / mau-based. Numbers below are copied from each vendor's pricing page.
Firebase AuthenticationFree tier or trial
- Free tier
- 50k MAU (basic email/social)
- Billed
- MAU-based (+ per-SMS)
- Best for
- Mobile/web auth inside Firebase
- Verified
- Jun 27, 2026
WorkOSFree tier or trial
- Free tier
- Up to 1M MAU on AuthKit; $125/connection for SSO/SCIM
- Billed
- Per connection / MAU-based
- Best for
- Enterprise SSO & SCIM for B2B
- Verified
- Jun 27, 2026
Firebase Authentication plans
| Plan | Price | What it covers |
|---|---|---|
| No-cost tier (Spark / Blaze free allowance) | $0 | First 50,000 monthly active users free for standard auth (email/password, social/federated, anonymous). |
| Standard MAU (Blaze, 50,001–100,000) | $0.0055 / MAU | Graduated per-MAU billing once you exceed the 50k free tier. |
| Standard MAU (100,001–1,000,000) | $0.0046 / MAU | Next graduated pricing band. |
| Standard MAU (1,000,001–10,000,000) | $0.0032 / MAU | Volume band; rate continues to fall to $0.0025/MAU above 10M. |
| Enterprise SSO (SAML / OIDC) | $0.015 / MAU | First 50 SAML/OIDC MAUs free, then $0.015 per MAU (requires Identity Platform upgrade). |
| Phone / SMS authentication | ~$0.01–$0.06 / SMS | Billed per SMS by destination country (US/Canada/India ~$0.01, UK ~$0.04, Brazil ~$0.05, most others ~$0.06); first 10/day free for testing. |
- Enterprise features (SAML/OIDC, MFA, SLA, real support) require the paid Identity Platform tier
- Per-SMS phone-auth costs can climb quickly for high-volume or international apps, and have been targets of SMS-pumping abuse
- Support is thin on the free tier; edge cases outside the docs can be hard to resolve
WorkOS plans
| Plan | Price | What it covers |
|---|---|---|
| Pay as You Go | Usage-based | Self-serve, automatic volume discounts, quick deployment, dedicated Slack support |
| Annual Credits (Enterprise) | Custom | Pre-pay discounts, contractual 99.99% uptime SLA, guided migration, guaranteed support |
| AuthKit (User Management) | Free up to 1M MAUs, then $2,500/mo per additional 1M MAUs | Email+password, social login, passkeys, MFA, magic auth, enterprise SSO |
| Single Sign-On / Directory Sync | $125 per connection/mo (volume discounts to $50 at 101–200) | Per-connection pricing; 16–30 conns $100 ea, 31–50 $80, 51–100 $65, 201+ custom |
| Audit Logs | $125/mo per SIEM stream + $99/mo per 1M events retained | Log streaming to SIEM plus event retention pricing |
| Radar (Bot & Fraud Protection) / Custom Domain | Radar: free first 1k checks then $100/50k; Custom Domain $99/mo | Fraud/bot checks and CNAME custom domains for AuthKit/Admin Portal/emails |
- Per-connection SSO/Directory Sync pricing ($125/connection/mo) scales with customer count, not revenue, the most common complaint
- A single SSO customer can cost more than a SaaS vendor's own lowest-tier plan, blocking SSO-on-all-tiers strategies
- Audit log and SIEM streaming add-ons stack additional monthly costs
Source: https://workos.com/pricing