Elastic vs Keycloak
The ultimate side-by-side head-to-head analysis for 2026.
Short answer
- Price: not directly comparable — Elastic is free tier available, Keycloak is free.
- How to start: Elastic is free tier available, Keycloak is free.
These lines are generated from the pricing we track, not from a paid placement. We do not publish a quality score, because we do not have one we can stand behind. They cannot tell you which tool fits your workflow — the sections below are there for that. How we score tools.
Elastic
Keycloak
Category
Developer Tools
Developer Tools
Base Price
Free tier
Free
Public API
Yes
Yes
Mobile app
No
No
Open source / self-hostable
Yes
Yes
SSO (SAML)
Yes
Yes
Choose Elastic if:
Teams needing serious search or log analytics on large volumes.
Choose Keycloak if:
Organisations that need enterprise identity without a per-user bill.
Elastic: pros & cons
- Extremely capable search and aggregation
- One stack for logs, metrics and search
- Large ecosystem and documentation
- Operationally demanding at scale
- Licensing changes have caused confusion
- Resource-hungry compared with focused tools
Keycloak: pros & cons
- Full identity server at no licence cost
- Standards support including SAML and OIDC
- Complete control over user data
- Operating it is a real responsibility
- Administration console is dense
- Upgrades need care
Our verdict on Elastic
Powerful and heavy in equal measure. If you only need log search, cheaper focused tools exist.
Our verdict on Keycloak
The serious open-source answer to Auth0. Budget for the operations, because the licence saving is not free.