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Jaeger vs Jenkins

Jaeger logo

Jaeger

Cloud

Open-source end-to-end distributed tracing

From
Free
Rated
-
Full reviewWebsite
Jenkins logo

Jenkins

Technology

A self-hosted automation server that can build almost anything, through a plugin ecosystem that is also its main liability.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Jaeger tracing is only as good as the instrumentation, and partial instrumentation produces misleading gaps; Jenkins the controller is stateful and, in the open source distribution, has no high availability: build history, configuration and plugin state live on one filesystem, so every plugin upgrade and core update is downtime for every team using it, and a controller disk failure is a restore-from-backup event.
  • They diverge on capability: Jaeger covers Distributed trace search, Jenkins covers Plugin ecosystem.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Jaeger and Jenkins actually diverge.

Attributes where Jaeger and Jenkins differ
AttributeJaegerJenkins
Pricing modelOpen source, no licence feeopen-source
PlatformsLinux, Kubernetes, DockerLinux, Windows, Macos, Docker
CategoryCloudTechnology
FoundedUnknown2011

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 Jaeger

  • Distributed trace search
  • Dependency graph
  • Adaptive sampling
  • Pluggable storage

Only in Jenkins

  • Plugin ecosystem
  • Distributed agents
  • Declarative and scripted pipelines
  • Shared libraries
  • Configuration as Code
  • Credentials management
  • Self-hosted anywhere
  • Multibranch and organisation folders

What people use each for

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

Jaeger

  • Finding which service in a request path causes the latencynot Jenkins
  • Understanding real service dependencies rather than the diagram on the wikinot Jenkins
  • Debugging failures that only appear under production traffic patternsnot Jenkins

Jenkins

  • Builds that must touch physical hardware, such as embedded devices, test rigs or signing modules attached to a specific machinenot Jaeger
  • Air-gapped or heavily regulated environments where a hosted CI runner cannot be used at allnot Jaeger
  • Toolchains that hosted CI does not support, including node-locked commercial licences for EDA, CAD or simulation softwarenot Jaeger
  • Organisations with years of existing Jenkins pipelines where the migration cost currently outweighs the operational cost of stayingnot Jaeger

Where each one falls short

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

Jaeger

  • Tracing is only as good as the instrumentation, and partial instrumentation produces misleading gaps
  • Storage is the real operational cost: high-volume tracing on Elasticsearch or Cassandra is a cluster to run and pay for
  • Traces alone, without correlated metrics and logs, leave you switching between tools during an incident

Jenkins

  • The controller is stateful and, in the open source distribution, has no high availability: build history, configuration and plugin state live on one filesystem, so every plugin upgrade and core update is downtime for every team using it, and a controller disk failure is a restore-from-backup event.
  • Capability comes from around 1,900 community plugins of very uneven maintenance, and the Jenkins security team regularly publishes advisories for plugins whose maintainer has gone; in some cases the advisory itself states that no fix is available and the only remedy is to stop using it.
  • Plugin upgrades are coupled: one plugin can require a newer core or a newer version of another plugin, so applying a single security fix cascades into a coordinated upgrade of a dozen components on a timetable you did not choose.
  • Pipelines are Groovy running under a sandbox and a continuation-passing-style transformation, so ordinary Groovy constructs sometimes fail in non-obvious ways, and the debugging skill you build transfers to no other CI system.
  • It is free to licence and expensive to run: somebody must own the controller, the agents, the Java version, the credentials store and the plugin upgrade cycle, and that recurring staff cost is the usual reason organisations move to hosted CI even when Jenkins works.
  • Leaving is costly by construction, because shared libraries, plugin-specific pipeline steps and accumulated freestyle jobs have no mechanical translation into GitHub Actions or GitLab CI, so the migration is a rewrite whose price grows every year you defer it.

Pricing, plan by plan

Jaeger

Free
  • JaegerFree
    • Full functionality
    • No usage limits
    • Community support

Jenkins

Free
  • Open SourceFree
    • Unlimited builds
    • 1000+ plugins
    • Self-hosted
  • CloudBees CI$undefined/month
    • Enterprise features
    • High availability
    • Role-based access

Which should you pick?

Choose Jaeger if

  • You need distributed trace search.
  • You want to start without paying.
  • You work on Linux, Kubernetes, Docker.
  • You also want dependency graph.
Jaeger review

Choose Jenkins if

  • You need plugin ecosystem.
  • You want to start without paying.
  • You work on Linux, Windows, Macos, Docker.
  • You also want distributed agents.
Jenkins review

Questions people ask

Is Jaeger or Jenkins better?
Neither clearly leads. Jaeger starts at Free and Jenkins at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Jaeger or Jenkins?
Jaeger starts at Free and Jenkins at Free.
Does Jaeger or Jenkins run on more platforms?
Jaeger runs on Linux, Kubernetes, Docker. Jenkins runs on Linux, Windows, Macos, Docker.
Can I use Jaeger for free?
Both have a free tier, so you can try either at no cost before committing.
What is Jaeger best used for?
Jaeger is most often used for finding which service in a request path causes the latency, understanding real service dependencies rather than the diagram on the wiki, debugging failures that only appear under production traffic patterns. Of those, finding which service in a request path causes the latency and understanding real service dependencies rather than the diagram on the wiki are not what Jenkins is typically brought in for.
What can Jaeger do that Jenkins cannot?
Jaeger covers Distributed trace search, Dependency graph, Adaptive sampling, Pluggable storage. Jenkins covers Plugin ecosystem, Distributed agents, Declarative and scripted pipelines, Shared libraries.

Answered from the vendors’ own pages

Jaeger: Is Jaeger free?

Yes, open source and CNCF-graduated. Costs are the storage backend you run.

Jenkins: Why choose Jenkins over GitHub Actions or GitLab CI?

When the build needs something hosted runners cannot give you: physical hardware, an air-gapped network, a node-locked commercial tool licence, or an unusual platform. If none of those apply, hosted CI is usually less work to own.

Jaeger: Do I use Jaeger or OpenTelemetry?

Both, usually. Instrument with OpenTelemetry and use Jaeger to store and query the traces.

Jenkins: Can Jenkins run in high availability?

Not in the open source distribution, which runs a single active controller. High availability and active-active controllers are features of CloudBees' commercial products. Open source deployments mitigate it with fast restores and, sometimes, multiple independent controllers.

Jaeger: Does Jaeger handle metrics and logs?

No. It is a tracing system. Metrics and logs need Prometheus, Loki or an equivalent.

Jenkins: How risky are the plugins?

This is the main operational risk. Many plugins have a single volunteer maintainer, and Jenkins publishes security advisories for unmaintained plugins where no fix exists. Auditing which plugins you depend on and who maintains them should be a periodic task, not a one-off.

Jenkins: Do I need to know Groovy?

For declarative pipelines you can go a long way without it. Anything involving shared libraries, conditional logic or custom steps is Groovy, and it runs in a sandboxed, transformed environment where standard Groovy idioms sometimes behave unexpectedly.

Jenkins: What does it cost?

The software is free under the MIT licence. The cost is infrastructure and staff time to run controllers, agents and upgrades, plus a CloudBees subscription if you want high availability, support or centralised management of many controllers.

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