The short answer
Auth0 is billed mau-based. It has a free tier: 25k MAU (free plan). The paid plans we list start at from $35-$70/mo (500 MAU) (B2C Essentials).
Plans and prices
| Plan | Price | What it covers |
|---|---|---|
| Free | $0 | Up to 25,000 MAU (B2C) / 500 MAU (B2B); includes social connections, basic MFA, and community support. |
| B2C Essentials | from $35-$70/mo (500 MAU) | Adds passwordless, MFA, role-based access; entry price for B2C scaled to MAU (raised toward $70/mo in late 2025). |
| B2B Essentials | from $150/mo (500 MAU) | Organizations support (unlimited orgs), B2B-oriented features, scaled by MAU. |
| B2C Professional | from $240/mo (1,000 MAU) | Adds external user databases, more MFA options (phone/email/WebAuthn/Guardian push), enhanced attack protection, longer log retention. |
| B2B Professional | from $800/mo (1,000 MAU) | Professional feature set for B2B with organizations and advanced protection, scaled by MAU. |
| Enterprise | Custom | Custom user/SSO tiers, 99.99% SLA, enterprise rate limits, advanced admin/support, private cloud options. |
How Auth0 bills you
The pricing model is mau-based. The category-defining developer-first identity platform, now Okta-owned, with deep docs, extensibility (Actions/Rules) and a 99.99% public-cloud SLA. Best suited to: full-featured ciam for b2c and b2b.
What to watch for on the bill
- MAU-based pricing with hard caps gets expensive fast at scale; widely called a startup 'growth penalty'
- Post-Okta pricing changes seen as steep and unpredictable (reports of large bill jumps and a B2C Essentials hike)
- B2B-critical features (enterprise SSO connections, higher rate limits, custom SLA, private cloud) gated behind custom Enterprise pricing
The pricing page we read
Source: https://auth0.com/pricing. Prices change, so confirm there before you commit.
Compare Auth0 with alternatives
Other authentication & identity apis: Firebase Authentication, WorkOS, Clerk, Stytch, Supabase Auth.
Looking at quality rather than price? See the Auth0 score on APIbenchmarks. Full entry: Auth0 pricing.