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Developer Tools · head to head

Argo CD vs authentik

Argo CD logo

Argo CD

Developer Tools

A declarative, GitOps continuous delivery tool for Kubernetes

From
Free
Free plan
Yes
Full reviewWebsite
authentik logo

authentik

Cybersecurity

Open-source identity provider with flexible authentication flows

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Argo CD licensed under Apache License 2.0 per the project's GitHub repository (argoproj/argo-cd LICENSE); as open source software it has no paid tier or vendor price to compare; authentik smaller project than Keycloak, with a correspondingly smaller community and fewer integration guides
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Argo CD and authentik actually diverge.

Attributes where Argo CD and authentik differ
AttributeArgo CDauthentik
Pricing modelopen-sourceOpen-source core with a paid enterprise tier
PlatformsWebDocker, Kubernetes, Linux, Self-hosted
CategoryDeveloper ToolsCybersecurity

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Argo CD

Nothing recorded that authentik does not also cover.

Only in authentik

  • Configurable flows
  • Protocol support
  • Application proxy
  • Modern admin interface

What people use each for

The jobs each tool is most often brought in to do.

Argo CD

  • Declarative GitOps continuous deployment for Kubernetes applicationsnot authentik
  • Automated configuration drift detection across multiple clustersnot authentik
  • Multi-environment management with blue/green and canary deploymentsnot authentik
  • Enterprise authentication with SSO, OIDC, OAuth2, LDAP, SAML 2.0not authentik
  • Webhook integration for GitHub, BitBucket, and GitLab automationnot authentik

authentik

  • Self-hosted SSO across internal services without commercial identity pricingnot Argo CD
  • Putting authentication in front of applications that have none, via the proxynot Argo CD
  • Teams who tried Keycloak and wanted something less heavynot Argo CD

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Argo CD

  • Licensed under Apache License 2.0 per the project's GitHub repository (argoproj/argo-cd LICENSE); as open source software it has no paid tier or vendor price to compare
  • The quick start installation requires the --server-side and --force-conflicts flags due to CRD size limitations, per argo-cd.readthedocs.io, a constraint the documentation states explicitly

authentik

  • Smaller project than Keycloak, with a correspondingly smaller community and fewer integration guides
  • The flow model is flexible but conceptually unfamiliar, and simple setups can feel over-abstracted
  • Enterprise support and some governance features sit behind the paid tier
  • Self-hosted identity is still yours to secure, patch and keep available

Pricing, plan by plan

Argo CD

Free

No published plan breakdown. See the Argo CD review.

authentik

Free
  • Open sourceFree
    • Full identity provider
    • All protocols
    • Community support

Which should you pick?

Choose Argo CD if

  • You want to start without paying.
Argo CD review

Choose authentik if

  • You need configurable flows.
  • You want to start without paying.
  • You work on Docker, Kubernetes, Linux, Self-hosted.
  • You also want protocol support.
authentik review

Questions people ask

Is Argo CD or authentik better?
Neither clearly leads. Argo CD starts at Free and authentik at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Argo CD or authentik?
Argo CD starts at Free and authentik at Free.
Does Argo CD or authentik run on more platforms?
Argo CD runs on Web. authentik runs on Docker, Kubernetes, Linux, Self-hosted.
Can I use Argo CD for free?
Both have a free tier, so you can try either at no cost before committing.
What is Argo CD best used for?
Argo CD is most often used for declarative gitops continuous deployment for kubernetes applications, automated configuration drift detection across multiple clusters, multi-environment management with blue/green and canary deployments, enterprise authentication with sso, oidc, oauth2, ldap, saml 2.0. Of those, declarative gitops continuous deployment for kubernetes applications and automated configuration drift detection across multiple clusters are not what authentik is typically brought in for.
What can Argo CD do that authentik cannot?
authentik covers Configurable flows, Protocol support, Application proxy, Modern admin interface.

Answered from the vendors’ own pages

Argo CD: What is the cost of Argo CD?

Argo CD is open source and free to use. No licensing fees, subscription charges, or commercial restrictions apply. The project is maintained by the CNCF community.

Source
authentik: Is authentik free?

The open-source edition is free and complete for most use. An enterprise tier adds support and additional features.

Argo CD: How frequently does Argo CD poll Git repositories by default?

Argo CD checks Git and Helm repositories every 3 minutes by default to detect configuration changes, enabling timely deployment of updates.

Source
authentik: authentik or Keycloak?

authentik is generally reported as easier to run and administer; Keycloak is more established with a larger community and Red Hat behind it.

authentik: Can authentik protect apps with no login of their own?

Yes. Its application proxy places authentication in front of services that have no built-in authentication.

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