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Technology · head to head

Checkmk vs Datadog

Checkmk logo

Checkmk

Technology

Comprehensive IT monitoring, open and flexible

From
Free
Rated
-
Full reviewWebsite
Datadog logo

Datadog

Technology

Modern monitoring & security

From
$15/month
Rated
-
Full reviewWebsite

The short version

  • Only Checkmk has a free tier, so it costs nothing to try first.
  • Each has a real cost: Checkmk pricing calculated by service count, not hosts (approximately 30 services per host on average); Datadog consumption-based pricing model makes costs hard to predict and can scale quickly
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Checkmk and Datadog actually diverge.

Attributes where Checkmk and Datadog differ
AttributeCheckmkDatadog
Starting priceFree$15/month
Pricing modelsubscriptionUnknown
Free tierYesNo
PlatformsWebWeb, Linux, Windows, macOS
FoundedUnknown2010

Identical on both: user rating (Not yet rated), category (Technology).

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 Checkmk

Nothing recorded that Datadog does not also cover.

Only in Datadog

  • Infrastructure monitoring
  • Application performance monitoring
  • Log management
  • Real user monitoring
  • Synthetic monitoring
  • Security monitoring
  • Network monitoring
  • Serverless monitoring

What people use each for

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

Checkmk

  • Infrastructure monitoring
  • System observabilitynot Datadog
  • Enterprise compliance monitoringnot Datadog

Datadog

  • Infrastructure monitoring
  • Application performancenot Checkmk
  • Security monitoringnot Checkmk
  • Log analysisnot Checkmk
  • Cloud monitoringnot Checkmk

Both are used for infrastructure monitoring, on those jobs the choice comes down to price and fit rather than capability.

Where each one falls short

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

Checkmk

  • Pricing calculated by service count, not hosts (approximately 30 services per host on average)
  • Professional support limited to 8-10 hours per week on base plans
  • Synthetic monitoring is separate add-on with per-test pricing

Datadog

  • Consumption-based pricing model makes costs hard to predict and can scale quickly
  • Add-on modules significantly increase costs: custom metrics, indexed spans, extended retention
  • No free tier for production monitoring
  • High costs for organizations with large amounts of log data or high-cardinality metrics

Pricing, plan by plan

Checkmk

Free
  • Community (Self-Hosted)Free
    • No cost, forever
    • Up to ~100 hosts
    • Basic infrastructure monitoring
  • Pro (Self-Hosted)$190/month
    • Advanced analytics
    • Reporting
    • Distributed monitoring
  • Ultimate (Self-Hosted)$275/month
    • Full-stack observability
    • Advanced security compliance
    • 10 hours x 5 days professional support (upgradable to 24/7)
  • CloudAI (SaaS)$240/month
    • Fully managed cloud hosting
    • 99.5% uptime SLA
    • Supports up to 50000 services

Datadog

$15/month
  • Infrastructure Monitoring$15/month
    • Host monitoring
    • Basic dashboards
  • APM$31/month
    • Application performance monitoring
    • Trace collection
  • Log Management$0.1/gb
    • Log indexing
    • Search and filter

Which should you pick?

Choose Checkmk if

  • You want to start without paying.
Checkmk review

Choose Datadog if

  • You need infrastructure monitoring.
  • You work on Web, Linux, Windows, macOS.
  • You also want application performance monitoring.
Datadog review

Questions people ask

Is Checkmk or Datadog better?
Neither clearly leads. Checkmk starts at Free and Datadog at $15/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Checkmk or Datadog?
Checkmk has a free tier; the other does not. Paid plans start at Free for Checkmk and $15/month for Datadog.
Does Checkmk or Datadog run on more platforms?
Checkmk runs on Web. Datadog runs on Web, Linux, Windows, macOS.
Can I use Checkmk for free?
Yes. Checkmk has a free tier, so you can try it without paying. Datadog starts at $15/month.
What is Checkmk best used for?
Checkmk is most often used for infrastructure monitoring, system observability, enterprise compliance monitoring. Of those, system observability and enterprise compliance monitoring are not what Datadog is typically brought in for.
What can Checkmk do that Datadog cannot?
Datadog covers Infrastructure monitoring, Application performance monitoring, Log management, Real user monitoring.

Answered from the vendors’ own pages

Checkmk: Is there a free version of Checkmk?

Yes, Checkmk Community edition is free forever and supports up to approximately 100 hosts for basic infrastructure monitoring with no cost.

Source
Datadog: How is Datadog pricing structured?

Datadog uses consumption-based pricing tied to data volume ingested, hosts monitored, and products enabled. Infrastructure Monitoring starts at $15/host/month, APM at $31/host/month, and Log Management at $0.10/GB for indexed logs.

Source
Checkmk: How does Checkmk calculate pricing by host count?

Checkmk uses service-based pricing where each monitored aspect (file system, hardware sensor, switch port, metric) counts as one service. On average, there are approximately 30 services per host.

Source
Datadog: Does Datadog offer a free tier?

Datadog offers a free trial but not a permanent free tier for production monitoring. Pricing begins with paid plans only.

Source
Checkmk: What is the difference between Checkmk Pro and Ultimate tiers?

Pro tier at 190 EUR/month includes advanced analytics and 8x5 support, while Ultimate at 275 EUR/month adds full-stack observability, advanced compliance features, and upgradable 24/7 support.

Source
Datadog: What integrations does Datadog support?

Datadog offers 1000+ built-in integrations including AWS, Kubernetes, Docker, Azure, GCP, and most major cloud platforms and services.

Source
Checkmk: Does Checkmk offer a managed SaaS option?

Yes, Checkmk CloudAI is a fully managed SaaS tier at 240 EUR/month with 99.5% uptime SLA and support for up to 50000 services.

Source
Datadog: Can Datadog monitor Kubernetes clusters?

Yes. The Datadog Agent runs as a DaemonSet to provide real-time visibility into pods, nodes, deployments, and control-plane health across major Kubernetes distributions including EKS, AKS, GKE, OpenShift, and others.

Source
Datadog: How can I reduce Datadog costs?

Datadog bills based on indexed logs, custom metrics, and high-cardinality tags. Costs can be unpredictable and may run 2-3x estimates. Prepaying annually can secure 5-15% discounts.

Source
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