Jenkins vs CircleCI
Jenkins is a program you install and keep running yourself, while CircleCI is a hosted service that charges for what your builds consume. Jenkins has no licence fee and no price list, so its real cost is the servers and the hours of whoever maintains them. CircleCI publishes a free plan and a usage-based Performance plan, but spends credits in a way that is harder to predict than a seat fee. The choice is mostly between owning the build server and renting capacity.
Sebastiaan SmitsFounderVendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. Every vendor link is marked the same, whatever the arrangement behind it. How that works.
Choose Jenkins ifyou already have people who can patch a Java server, manage plugins and watch agents, and you want no licence cost or vendor that can reprice. You also want the freedom to run it on Linux, macOS, Windows, Docker or Kubernetes.
Choose CircleCI ifyou want hosted CI where somebody else runs the infrastructure and cost follows the number of jobs you run. You are fine buying credits and checking usage each month.
Jenkins and CircleCI side by side
| Jenkins | CircleCI | |
|---|---|---|
| Our CI/CD tool rank | #8 of 14 | #5 of 14 |
| Established in | Not stated by the vendor | United States |
| List price, 6 November 2026 | MIT-licensed, so nothing to buy; hardware and admin time are yours, and no price list exists | Credits bought in advance: Free at $0, Performance from $15 per month, Scale quoted on request |
| Free tier | Yes | Yes |
| Open source | Yes | — |
| Self-hostable | Yes | Yes |
| Built for | Organisations with existing Jenkins skills that want no licence cost | Teams that want hosted CI that scales with job volume and parallel test runs |
| Not for | Teams with nobody to maintain a build server | Buyers who want a flat per-seat price they can easily forecast |
Both are reviewed in full in our CI/CD tool ranking: Jenkins and CircleCI.
Where they differ
Jenkins 3 · CircleCI 2 · open 1- 01
Who keeps the build server alive
Jenkins is a self-contained Java program with packages for Windows, Linux, macOS and other Unix-like systems, and the installation documentation describes only servers you run yourself, with no hosted option. Someone has to install it, update it and look after agents. CircleCI runs the platform for you, with a separate Server edition for on-premises installs. If nobody on your team wants that job, CircleCI wins.
Edge: CircleCI
- 02
Cost of getting started
Jenkins has no price list, and the project is MIT-licensed, so the software itself costs nothing and your spend is hardware and maintenance time. CircleCI's Free plan is $0 per month with no credit card, 30,000 credits per month that expire without rollover, 5 active users and 30x concurrency. Both start at zero, but only Jenkins stays at zero as you grow.
Edge: Jenkins
- 03
Paying for more build capacity
On CircleCI the Performance plan starts from $15 per month, includes 30,000 credits and sells more at $15 per 25,000, with 80x concurrency. Scale is custom and billed annually, quoted on request, with unlimited concurrency. Prices are in USD, taxes excluded, and no separate trial is mentioned for paid plans. Jenkins has no equivalent tiers, because capacity is whatever machines you add.
Depends on the buyer
- 04
Plugins and the toolchain around it
The Jenkins plugin site lists more than 2000 community plugins, and the homepage cites over 2,300 that connect it to the continuous integration and delivery toolchain. Work can be distributed across several machines and configured through a web interface. The flip side is upgrade and compatibility work on a plugin-heavy server. Our CircleCI facts name no plugin catalogue, so Jenkins has the wider documented reach.
Edge: Jenkins
- 05
Splitting a slow test suite
CircleCI documents timing-based test splitting: it uses the timings of previous runs to divide a suite evenly across parallel environments. That is a concrete answer to a slow pipeline, and it is tied to the credits you spend on those containers. The Jenkins pages we read describe distributing work across machines but name no equivalent timing-based splitting feature, so CircleCI has the clearer documented answer here.
Edge: CircleCI
- 06
Ownership and what can change under you
Jenkins assets are legally owned by the Linux Foundation, the MIT licence is primary, and the project runs on a community Board with officer elections. The vendor states no country. CircleCI is operated by Circle Internet Services, Inc., San Francisco, United States, per its terms. A company can change a price list; an MIT project cannot, so Jenkins carries less repricing risk.
Edge: Jenkins
When neither fits
If you want a hosted service but dislike credit billing, look at Semaphore or Buildkite. If you want a self-hosted option lighter than a plugin-heavy Jenkins, Woodpecker CI is worth reading about.
Jenkins or CircleCI: questions
3 answersDoes Jenkins cost anything at all?
The software is free and MIT-licensed, and the vendor publishes no price list. What you pay for is the servers it runs on and the time spent maintaining controller, agents and plugins. That bill does not show on any invoice from the project.
What happens to unused CircleCI credits at month end?
On the Free plan the 30,000 monthly credits expire and do not roll over. The page we read states this for Free only. For purchased credits on Performance, check the pricing page before relying on carry-over.
Can either run inside my own infrastructure?
Jenkins always does, since it is installed on Linux, macOS, Windows, Docker or Kubernetes.
CircleCI offers self-hosted runners, with 5 concurrent tasks on Free and 20 on Performance, plus a separate Server edition for on-premises use. Runner network traffic beyond the allowance costs 420 credits per GB.
Sources
Checked 6 November 2026- Jenkins homepage: self-contained Java program, 2,300 plugins cited, work spread over several machines, community Board.
- Jenkins installation guide: runs on Linux, macOS, Windows, Docker and Kubernetes; no hosted option described.
- Jenkins governance page: assets owned by the Linux Foundation, MIT as the primary licence.
- Jenkins plugin index: count of community plugins above 2000.
- CircleCI pricing page: Free, Performance and Scale terms, credit expiry, runner limits, 420 credits per GB, USD excluding tax.
- CircleCI parallelism guide: test splitting driven by timings of earlier runs.
- CircleCI terms of service: operating entity Circle Internet Services, Inc. in San Francisco.
- CircleCI Server page: existence of an on-premises edition, no price shown.