Empire SSO vs Auth0: Magic-link SSO that doesn't bill per MAU
The TL;DR
If you're shopping for Auth0 alternatives, here's the one-line: Magic-link SSO that doesn't bill per MAU. The rest of this post explains why that matters — and where Auth0 is still the right call.
Why we built Empire SSO
I run an SMB SaaS and Clerk/Auth0 priced me out at scale. I want SSO + social login + MFA at indie pricing.
The Auth0 approach works, but it carries assumptions we couldn't make for our own 49 apps. We needed:
- A real free tier — so we could dogfood our own product at $0 across dev environments.
- Multi-tenancy from day one — every app we ship is multi-tenant and so is everything we put under it.
- OpenAI-compatible interfaces where possible — so swapping providers is a config change not a refactor.
- Audit-log integration — every action chain-hashed, exportable for SOC2 review.
- Cross-cloud probing — what happens when CF routing breaks for your zone? Local checks miss this.
Where Auth0 wins
Be honest: Auth0 has the brand on procurement forms, the integrations marketplace, the years of marketing budget. If you need a logo your CFO recognizes, pick Auth0. If you need to ship something that works under a budget you control — keep reading.
Where Empire SSO wins
Battle-tested across 16+ empire apps via f938-empire-auth. 1/10th cost of Clerk Pro ($25/seat).
Concretely, the moat shows up in three places:
- Cost. Per-MAU pricing turns into surprise bills the moment you grow. Empire SSO prices on usage-tier not on user-count.
- Lock-in. We open-source the engine where possible. The SaaS is the convenience, not the only path.
- Self-hostable. Enterprise tier ships the same binary you can run in your own VPC. No proprietary fork.
The migration in 30 minutes
For most teams, swapping from Auth0 to Empire SSO is a single integration point:
- Sign up at empiresso.eliteaiempire.com/contact/ and get your API key (or just enable the free tier — no card required).
- Point your existing client at our gateway. Most APIs are drop-in compatible.
- Run side-by-side for a week. If your dashboards stay green, switch.
Honest residuals
We're not pretending Empire SSO is feature-parity with Auth0 on day one. Auth0 has years of polish. What Empire SSO has is:
- Real internal usage across 49 apps — every feature we ship lives in our own production first.
- A roadmap driven by what we actually need, not what wins enterprise demos.
- A team that uses the same product you're buying.
Get started
The free tier is real. Sign up at empiresso.eliteaiempire.com/contact/ and try it for a week. If you've still got Auth0-only requirements after that, we'll tell you that too.