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Developer Tools · head to head

Argo CD vs Cisco Duo

Argo CD logo

Argo CD

Developer Tools

A declarative, GitOps continuous delivery tool for Kubernetes

From
Free
Free plan
Yes
Full reviewWebsite
Cisco Duo logo

Cisco Duo

Cybersecurity

Trusted access for all users, all devices

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; Cisco Duo free tier limited to 10 users maximum
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Argo CD and Cisco Duo actually diverge.

Attributes where Argo CD and Cisco Duo differ
AttributeArgo CDCisco Duo
Pricing modelopen-sourcesubscription
CategoryDeveloper ToolsCybersecurity

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

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

Cisco Duo

  • Eliminating phishing with passwordless authnot Argo CD
  • Implementing zero trust with device trustnot Argo CD
  • Protecting sessions from hijacking and theftnot Argo CD
  • Managing compliance for regulated industriesnot 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

Cisco Duo

  • Free tier limited to 10 users maximum
  • Licenses must be purchased in 10-user increments (under 100 users) or 25-user increments (100+ users)
  • Pricing is per-user per-month with minimum purchase increments

Pricing, plan by plan

Argo CD

Free

No published plan breakdown. See the Argo CD review.

Cisco Duo

Free
  • FreeFree
    • Multi-factor authentication (MFA)
    • Seamless integrations
    • Authenticator app
  • Essentials$3/month
    • All Free features
    • Duo Directory
    • Phishing-resistant MFA
  • Advantage$6/month
    • All Essentials features
    • Identity intelligence
    • Cisco Identity Intelligence (ISPM, ITDR)
  • Premier$9/month
    • All Advantage features
    • Complete device trust
    • VPN-less remote access

Which should you pick?

Choose Argo CD if

  • You want to start without paying.
Argo CD review

Choose Cisco Duo if

  • You want to start without paying.
Cisco Duo review

Questions people ask

Is Argo CD or Cisco Duo better?
Neither clearly leads. Argo CD starts at Free and Cisco Duo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Argo CD or Cisco Duo?
Argo CD starts at Free and Cisco Duo at Free.
Does Argo CD or Cisco Duo run on more platforms?
Both run on Web, so platform support will not decide this one for you.
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 Cisco Duo is typically brought in for.

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
Cisco Duo: How much does Cisco Duo cost?

Cisco Duo Free is $0/user/month (up to 10 users). Paid plans start at $3/user/month (Essentials), $6/user/month (Advantage), and $9/user/month (Premier). Billing is per-user per-month.

Source
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
Cisco Duo: Is Cisco Duo free to try?

Yes, Duo Free offers multi-factor authentication and seamless integrations at $0/user/month for up to 10 users.

Source
Cisco Duo: What is the minimum purchase for Cisco Duo?

Organizations must buy licenses in 10-user increments for under 100 users, or 25-user increments for 100 or more users. Plans are modifiable at any time.

Source
Cisco Duo: What does the Advantage plan add over Essentials?

Advantage ($6/user/month) adds identity intelligence, Cisco Identity Intelligence (ISPM, ITDR), Duo Passport, session theft protection, Active Directory Defense, and risk-based authentication.

Source
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