CircleCI vs Jenkins
A source-aware comparison of pricing, documented capabilities and workflow fit.
Short answer
- Price: not directly comparable — CircleCI is free tier available, Jenkins is free.
- How to start: CircleCI is free tier available, Jenkins is free.
- Where they differ: only CircleCI has sso (saml) and only Jenkins has open source / self-hostable; both offer public api.
These lines are generated from the pricing we track, not from a paid placement. How we score tools.
What CircleCI is
What CircleCI isCircleCI runs build, test and deployment pipelines defined in a YAML file in your repository. It is a focused CI product rather than part of a wider suite, and it shows in configuration flexibility and speed. Orbs — reusable configuration packages — cut most standard pipelines down to a few lines, and jobs can be split across parallel containers to shorten long test suites. Billing is by compute credit rather than per user, so cost tracks how much you build rather than team size.
What Jenkins is
What Jenkins isJenkins is the long-standing open-source automation server. It runs anywhere, does almost anything through plugins, and costs nothing in licence fees; what it costs is maintenance. Choose it when you need to run builds on your own hardware, behind your own network rules, with no per-minute billing. Expect to own upgrades, plugin compatibility and the security of the controller yourself; that maintenance is the real price.
Side by side
| CircleCI | Jenkins | |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| How to start | Free tiernot a monthly price | Freeverified |
| Public API | Yes | Yes |
| Mobile app | No | No |
| Open source / self-hostable | No | Yes |
| SSO (SAML) | Yes | No |
| Visit | CircleCI ↗ | Jenkins ↗ |
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What CircleCI is built to do
- Orbs
- Reusable configuration packages that replace boilerplate for common deploy targets.
- Test parallelism
- Splits a test suite across containers, cutting wall-clock time on long runs.
- SSH into a failed build
- Reproduce a failure inside the actual build container instead of guessing.
- Credit-based billing
- Cost follows build minutes and machine size rather than headcount.
What Jenkins is built to do
- Plugin ecosystem
- Extends builds to almost any tool through a large plugin catalogue.
- Self-hosted controller
- Runs entirely on your own infrastructure with no per-minute billing.
- Pipeline as code
- Defines builds in a Jenkinsfile stored alongside the source.
Choose CircleCI if
- Small teams — the free plan includes 30,000 credits and up to 5 active users a month
- Projects that fit roughly 6,000 build minutes a month on the smallest Docker class
- Teams that want 30x concurrency without paying for it
Skip CircleCI if
- You are budgeting in minutes — CircleCI bills in CREDITS, and the minute count depends on the machine size you pick
- You add people: each additional active user costs 25,000 credits a month
- You move large artifacts; network and storage past the threshold cost 420 credits per GB
Choose Jenkins if
- Teams that want a free, MIT-licensed CI server they fully control, on their own hardware or Kubernetes
- Pipelines that depend on unusual tooling — Jenkins runs as a self-contained Java program with hundreds of plugins
- Organisations that want a stable baseline: LTS lines are cut every 12 weeks with fixes every 4 weeks
Skip Jenkins if
- You want a hosted service: Jenkins is self-hosted only, there is no vendor cloud
- Nobody on the team will own upgrades and plugin compatibility — that maintenance is the real cost
- You need vendor support and SLAs: the project is community-run under the Continuous Delivery Foundation
Evidence and freshness
Where a claim on this page comes from a vendor page, it is linked here.
Jenkins
Open source, free — vendor page verified · reviewed 2026-09-08
CircleCI: pros & cons
- Fast builds with good caching and parallelism
- Docker-first, so local and CI environments match
- Works across GitHub, Bitbucket and GitLab
- Pricing by credits is hard to predict
- Configuration gets complex on large monorepos
- Debugging failed builds can be slow
Jenkins: pros & cons
- Free and open source with no usage limits
- Enormous plugin ecosystem
- Runs entirely on your own infrastructure
- You maintain the server, the agents and the plugins
- Interface and defaults feel dated
- Plugin quality varies and updates can break builds
Our verdict on CircleCI
Strong if CI is a bottleneck for you. If your pipelines are simple, the CI built into your Git host is probably enough.
Our verdict on Jenkins
Still the right answer when control matters more than convenience. For most small teams a hosted CI is less work.
Published plans, side by side
Every figure below was read from the vendor's own pricing page and is shown with the sentence it came from. Where a vendor publishes no plan prices, we say so rather than guess.
CircleCI
- Free$0/mo
Free $0 with 30,000 credits/month, up to 6,000 build minutes on the small Docker class, up to 5 active users and 30x concurrency
- Performance$15/mo
Performance from $15/month
Jenkins
No published plan prices verified. Jenkins either quotes on request or renders its prices in a way we could not read from the pricing page.
CircleCI vs Jenkins: common questions
- Does CircleCI or Jenkins have a free plan?
- Both do: CircleCI has a free tier with limits, and Jenkins is free.
- What is the difference between CircleCI and Jenkins?
- On the criteria we check, only CircleCI has sso (saml) and only Jenkins has open source / self-hostable; both offer public api. The table above lists every criterion side by side.