Head to head
Auth0 vs FusionAuth
Both platforms are scored with the same methodology and the same category rubric. Nothing on this page is influenced by advertising.
56/100Higher score | 49/100 | |
|---|---|---|
| Category rank | #1 | #6 |
| Confidence | Medium confidence | High confidence |
| External Reputation | 70 | 74 |
| AI Authority | 55 | 30 |
| Web Authority | 31 | 23 |
| Expert Assessment | 62 | 62 |
| TOP10 User Score | — | — |
| Pricing | From $35/month (B2C Essentials at 500 MAUs); B2B Essentials starts at $150/month at 500 MAUs · free tier: $0/month for up to 25,000 MAUs (B2C and B2B), 1 custom domain (card verification), passwordless, unlimited social connections, 5 Organizations, 1 Enterprise Connection, self-service SSO and SCIM, community support; no credit card to sign up | Starter from $162/mo (billed annually, at the page default of 1,000 MAUs), community-forum support only, basic hosting included · free tier: Community — free, unlimited, self-hosted with core authentication features and community support (forums, Slack, GitHub); passkeys/WebAuthn and biometrics reportedly require registering a free Community licence |
| Pricing model | Subscription (tiered by Monthly Active Users, with add-ons) | Subscription (MAU-based tiers; free self-hosted Community edition) |
| Best for | Development teams under roughly 10,000 MAUs, or B2B SaaS vendors needing Organizations plus a handful of SAML connections who can absorb $150–$2,400/month; also regulated buyers willing to buy at Enterprise for the 99.99% SLA, HIPAA/BAA and FAPI profile. | Engineering-led B2C or mid-market B2B SaaS teams that need data sovereignty or on-prem CIAM, are comfortable with OAuth2/OIDC concepts, and want an API-first platform they can start free and later move to managed hosting without switching vendors. |
| Avoid if | You run a high-MAU consumer platform (above ~30,000 B2C MAUs pricing is sales-only), you are a cost-sensitive startup on a steep growth curve exposed to the next-tier-up billing rule, you need predictable spend forecasting, or you are a B2C buyer needing enterprise SAML connections below the Enterprise tier. | You lack dedicated engineering capacity for identity work, require a truly open-source core, need 24x7 support or an SLA on a small budget, need cheap SCIM provisioning, or require FedRAMP or Zanzibar-style fine-grained authorization. |
| Markets | SMB, Startups, B2B SaaS, Enterprise | SMB, Mid-Market, Enterprise, Developers, Startups |
| Founded | — | — |
| Headquarters | — | — |
A higher TOP SCORE means more of the evidence favours that platform on this methodology — it is not a recommendation, and it does not account for your specific requirements. Advertisers are never declared the winner of a comparison.