# frontegg-vs-auth0

Source: https://startwithidentity.com/compare/frontegg-vs-auth0/
Last updated: 2026-08-29
License: content by Start with Identity. Cite the source URL.

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## The honest comparison

[Frontegg](https://startwithidentity.com/vendors/ciam/frontegg/) and [Auth0](https://startwithidentity.com/vendors/ciam/auth0/) both do [customer identity](https://startwithidentity.com/guides/fundamentals/what-is-ciam/), and score 4.3 and 4.6, but they are aimed at different products.

Auth0 is general-purpose CIAM: B2C, B2B, and everything in between, with the widest protocol coverage in the category, custom database connections for migrating off a legacy store, and Actions for injecting logic anywhere in the authentication pipeline. It is a subsidiary of Okta, which brings enterprise distribution and the compliance posture that comes with it.

Frontegg is built for one shape of customer: B2B SaaS selling upmarket. Tenancy is native rather than modelled, so organizations, hierarchies, per-tenant configuration, and an end-customer admin portal are product features rather than things you build. The self-serve [SSO](https://startwithidentity.com/glossary/sso/) and [SCIM](https://startwithidentity.com/standards/scim-2-0/) upsell flow is the clearest example: your enterprise customer configures their own federation on a paid plan without touching your support team.

If you are a B2B SaaS company, that difference is worth more than a protocol comparison. If you are anything else, Auth0's breadth is the safer default.

## When Frontegg wins

- B2B SaaS with a mid-market and enterprise upmarket motion
- Multi-tenant data model, org hierarchies, and admin portals needed out of the box
- Self-serve "upgrade to SSO" flows are a revenue lever rather than a support burden
- You would otherwise spend engineering quarters building tenancy and admin surfaces

## When Auth0 wins

- B2C, or mixed B2B and B2C identity in one product
- Protocol breadth and extensibility beyond the B2B SaaS pattern
- Migration off a legacy identity store using custom database connections
- Enterprise compliance certifications and vendor diligence posture matter to your buyers
- Data residency requirements that a dedicated private cloud deployment can satisfy

## Pricing

Frontegg is usage-based with a free tier, scaling by tenants and active users, which is reasonable for SaaS startups and worth re-validating as your customer count grows, since tenant-based scaling behaves differently from user-based scaling.

Auth0 has a free tier and per monthly active user tiers that escalate, with B2B organizations, advanced MFA, and enterprise capabilities gated behind higher plans. The tier boundaries matter more than the volume curve. Model both at your projected customer and user counts with the [TCO calculator](https://startwithidentity.com/tools/tco-calculator/).

## Verdict

For B2B SaaS specifically, [Frontegg](https://startwithidentity.com/vendors/ciam/frontegg/) is the sharper tool and removes work you would otherwise build. For mixed use cases, consumer scale, or organizations whose buyers run heavy vendor diligence, [Auth0](https://startwithidentity.com/vendors/ciam/auth0/). Compare against [WorkOS vs Frontegg](https://startwithidentity.com/compare/workos-vs-frontegg/) and [Auth0 vs WorkOS](https://startwithidentity.com/compare/auth0-vs-workos/), and see [best CIAM for B2B SaaS](https://startwithidentity.com/rankings/best-ciam-for-b2b-saas/) plus [best SSO and SCIM platforms for B2B SaaS](https://startwithidentity.com/rankings/best-sso-scim-platforms-b2b-saas/).