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Logging · head to head

Checkmk vs Vector

Checkmk logo

Checkmk

Logging

Comprehensive IT monitoring, open and flexible

From
Free
Free plan
Yes
Visit CheckmkFull review
Vector logo

Vector

Logging

A Lightweight and Ultra-Fast Tool for Building Observability Pipelines

From
Free
Free plan
Yes
Visit VectorFull review

The short version

  • Vector is free; Checkmk starts at €190/mo.
  • Where Checkmk falls short: pricing calculated by service count, not hosts (approximately 30 services per host on average).
  • Where Vector falls short: free and open source under the MPL-2.0 license, backed by an open source community with a public GitHub repo.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Checkmk and Vector actually diverge.

Attributes where Checkmk and Vector differ
AttributeCheckmkVector
Pricing modelSubscriptionOpen-source
PlatformsWebWeb, API

Identical on both: starting price (Free), free tier (Yes), category (Logging).

Not yet recorded: founded for Checkmk.

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 Vector does not also cover.

Only in Vector

  • Log collection
  • Metrics collection
  • Trace collection
  • Event transformation
  • API
  • Webhooks
  • REST
  • Web support

What people use each for

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

Checkmk

  • Infrastructure monitoringnot Vector
  • System observabilitynot Vector
  • Enterprise compliance monitoringnot Vector

Vector

  • Log monitoringnot Checkmk
  • Application performancenot Checkmk
  • Security analyticsnot Checkmk
  • Troubleshootingnot Checkmk

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

Vector

  • Free and open source under the MPL-2.0 license, backed by an open source community with a public GitHub repo

Pricing, plan by plan

Checkmk

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

Vector

Free
  • FreeFree
    • Log collection
    • Metrics collection
    • Trace collection

Which should you pick?

Choose Checkmk if

  • You want to start without paying.
Checkmk review

Choose Vector if

  • You need log collection.
  • You want to start without paying.
  • You work on Web, API.
  • You also want metrics collection.
Vector review

Questions people ask

Is Checkmk or Vector better?
Neither clearly leads. Checkmk starts at Free and Vector at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Checkmk or Vector?
Checkmk starts at Free and Vector at Free.
Does Checkmk or Vector run on more platforms?
Checkmk runs on Web. Vector runs on Web, API.
Can I use Checkmk for free?
Both have a free tier, so you can try either at no cost before committing.
What is Checkmk best used for?
Checkmk is most often used for infrastructure monitoring, system observability, enterprise compliance monitoring. Of those, infrastructure monitoring and system observability are not what Vector is typically brought in for.
What can Checkmk do that Vector cannot?
Vector covers Log collection, Metrics collection, Trace collection, Event transformation.

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
Vector: Is Vector free to download and use?

Yes, Vector is free and open source. The software is available across multiple platforms including Linux (various distributions), macOS, and Windows through direct downloads, package managers, containers, and source code.

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
Vector: What license does Vector use?

Vector is distributed under the Mozilla Public License (MPL 2.0). This license applies uniformly across all Vector releases.

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
Vector: Can I use Vector for commercial purposes without paying?

Vector appears to have no built-in paid tier distinction and is offered as unified open-source software. However, commercial support options or enterprise services may exist beyond the open-source distribution.

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
Vector: Is there paid support or enterprise licensing available for Vector?

The Vector documentation and download pages do not specify commercial support tiers or enterprise licensing options. Such information would require contacting the Vector/Datadog team directly.

Source
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