Head to head
Clerk vs FusionAuth
Both platforms are scored with the same methodology and the same category rubric. Nothing on this page is influenced by advertising.
53/100Higher score | 49/100 | |
|---|---|---|
| Category rank | #3 | #6 |
| Confidence | Medium confidence | High confidence |
| External Reputation | 70 | 74 |
| AI Authority | 63 | 30 |
| Web Authority | 14 | 23 |
| Expert Assessment | 52 | 62 |
| TOP10 User Score | — | — |
| Pricing | From $25/mo (Pro) — vendor-domain explainer, not verified on the billing page · free tier: Free "Hobby" plan covering 50,000 monthly retained users; all features free in development mode | 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 (metered on monthly retained users) | Subscription (MAU-based tiers; free self-hosted Community edition) |
| Best for | React/Next.js product teams shipping B2B SaaS or paid B2C below roughly 50k retained users, who value time-to-launch over auth-layer control, have engineers able to work around component styling limits, and whose incident tolerance can absorb slow vendor support. | 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 non-JavaScript stack, need deep domain-specific authorization, operate a free/ad-supported or high-churn consumer app at scale, need Clerk to be your billing system today, or carry hard support SLAs and regulated uptime obligations. | 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, Mid-Market, B2B SaaS, Startups | 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.