Which is cheaper, Keycloak or Supabase Auth?

Keycloak: Free, open source. Hosting and ops are on you.. Supabase Auth: Free up to 50k MAU. Pro $25/mo + $0.00325/MAU above.. Per-seat pricing means the cheaper sticker price isn't always the cheaper bill — model your seat count first.

Can I migrate from Keycloak to Supabase Auth?

Yes. Most teams export Keycloak data as CSV or Markdown and re-import into Supabase Auth. The painful part is usually automations and integrations, not the data itself.

Authentication · 2026

Keycloak·vs·Supabase Auth

Q: Is Keycloak or Supabase Auth better?

Neither wins outright. Keycloak is best for teams with ops capacity that need on-prem or regulated-data deployments. Supabase Auth is best for teams that want auth + database in one platform and the option to self-host.

Two solid choices in authentication. Here's how they stack up on pricing, fit, and trade-offs — so you can decide in a minute.

Reviewed by Switchpoint Editors · Last updated May 11, 2026

Contender A

Keycloak

Battle-tested open-source IAM you run yourself — no MAU costs, full data residency.

Best for

Teams with ops capacity that need on-prem or regulated-data deployments.

Pricing

Free, open source. Hosting and ops are on you.

Pros

Zero per-user cost
Full data ownership and residency control
Mature enterprise feature set (SSO, SCIM, federation)

Trade-offs

You operate it — upgrades, scaling, security
Steeper learning curve than hosted SaaS

Visit Keycloak

Contender B

Supabase Auth

Open-source auth tied into a Postgres-backed BaaS — full data ownership.

Best for

Teams that want auth + database in one platform and the option to self-host.

Pricing

Free up to 50k MAU. Pro $25/mo + $0.00325/MAU above.

Pros

Open source and self-hostable
Tight Postgres + RLS integration
Generous free tier

Trade-offs

Org/team primitives are DIY
Enterprise SSO is paid add-on

Visit Supabase Auth

The matrix

Side-by-side

Best for

Keycloak

Teams with ops capacity that need on-prem or regulated-data deployments.

Supabase Auth

Teams that want auth + database in one platform and the option to self-host.

Pricing

Keycloak

Free, open source. Hosting and ops are on you.

Supabase Auth

Free up to 50k MAU. Pro $25/mo + $0.00325/MAU above.

Top strength

Keycloak

Zero per-user cost

Supabase Auth

Open source and self-hostable

Biggest trade-off

Keycloak

You operate it — upgrades, scaling, security

Supabase Auth

Org/team primitives are DIY

	Keycloak	Supabase Auth
Best for	Teams with ops capacity that need on-prem or regulated-data deployments.	Teams that want auth + database in one platform and the option to self-host.
Pricing	Free, open source. Hosting and ops are on you.	Free up to 50k MAU. Pro $25/mo + $0.00325/MAU above.
Top strength	Zero per-user cost	Open source and self-hostable
Biggest trade-off	You operate it — upgrades, scaling, security	Org/team primitives are DIY

The verdict

Which should you pick?

If…Pick Keycloak

Teams with ops capacity that need on-prem or regulated-data deployments.

If…Pick Supabase Auth

Teams that want auth + database in one platform and the option to self-host.

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