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Build your open source projects on CircleCI.

Linux, Windows, and macOS open source projects build on CircleCI for free. Learn more

Powerful compute options

With usage-based plans, your team can choose the compute type, CPU, and memory you need for each job. Usage is calculated based on build minutes and compute type.

Get Started for Free

Docker (Linux)

vCPU Memory (GB) Credit/Min
Small 1 2 5
Medium 2 4 10
Medium+ 3 6 15
Large 4 8 20
X-large 8 16 40
2 X-large 16 32 80
2 X-large+ 20 40 100

Linux VM

vCPU Memory (GB) Credit/Min
Medium 2 7.5 10
Large 4 15 20
X-large 8 32 100
2 X-large 16 64 200

Arm VM (Linux)

vCPU Memory (GB) Credit/Min
Medium 2 8 10
Large 4 16 20

macOS VM

vCPU Memory (GB) Credit/Min
Medium 4 8 50
Large 8 16 100

Windows VM

vCPU Memory (GB) Credit/Min
Medium 4 15 40
Large 8 30 120
X-large 16 60 210
2 X-large 32 128 500


vCPU Memory (GB) Credit/Min
Small (Nvidia Tesla P4) 4 15 160
Medium (Nvidia Tesla T4) 8 30 240
Large (Nvidia Tesla V100) 8 30 1000

Windows GPU–Nvidia

vCPU Memory (GB) Credit/Min
Medium (Nvidia Tesla T4) 16 60 500

Docker layer caching

200 credits per job run

Build faster on CircleCI

With these changes, a team can go from a

30 minutes
build cycle
6 minutes
build cycle
30 minutes

How can you get your build from 30 minutes to 6 minutes? Here's an example!

Docker layer caching saves 12 minutes of build time.

Concurrency and parallelism take off another 8 minutes.

Using more powerful resources can shave off another 2 minutes.

By controlling what image your build uses, your team can drop another 2 minutes from their build process.

Frequently Asked Questions

Credits are the currency of CircleCI. Credits are purchased up-front and are used to pay for CircleCI platform usage in real time. Platform usage consists of:

Monthly active users - By using credits to pay for monthly active users, your organization is never restricted to a static number of active users each month.

Compute time - Each resource type on CircleCI has an associated credit/minute price. Your credits are used in real time whenever your organization is actively using a compute resource on CircleCI.

Add-on features - Some features of CircleCI have additional credit costs associated with them. These costs may be represented in credits per use or in credits per minute.

Additional network & storage use - network and storage utilization beyond the plan-specified thresholds is charged at 420 credits/GB.

Credits are purchased in blocks of 25,000. At the beginning of each billing month (based on your purchase date), you are charged for your credit package and those credits are added to your account. When only 2% of your credits remain anytime within your billing month, credits automatically refill to a level of 25% of your total credit package, with a minimum refill amount of 25,000.

For example,
• If your monthly package size is 25,000 credits, you will automatically be refilled 25,000 credits when you reach 500 remaining credits.
• If your monthly package size is 200,000 credits, you will automatically be refilled 50,000 credits when you reach 4,000.

Credits on the free plan expire after a month and do not roll over.

The Performance plan includes the 30,000 credits available to the Free plan; these expire and do not roll over month to month.

Performance plan users may purchase additional credits at $15 for every 25,000 credits. Any paid credits roll over month to month, and expire after a year.

Unused credits will be forfeited if the account subscription is canceled.

Example: 30,000 credits at a rate of 10 credits per min (using Linux Medium) is 3,000 minutes.

It’s important to note that a minute on CircleCI is different than a minute on other CI platforms. Access to more powerful resources, Docker Layer Caching, as well as concurrency and parallelism mean you can do more in a minute on CircleCI than anywhere else.

Concurrent job runs refers to the number of jobs that can run simultaneously without queueing. You pay for compute based on the total amount of time you use compute resources, not the number of resources that you have access to. This means you can choose the right plan for your team to maximize concurrent jobs and parallelism for your jobs to minimize queuing.

For example, say you have a workflow with 10 jobs that each take 5 minutes to run. If you are limited to 1x concurrency, each of these jobs runs subsequently, and the workflow completes in 50 minutes. With scaling concurrency, you can run all 10 jobs concurrently (at the same time), and the workflow completes in 5 minutes. In both cases, your total usage time is 50 minutes since you used 10 machines for 5 minutes each. With usage-based pricing, that means you pay the same amount either way, but if you maximize your concurrency, you save 45 minutes of time waiting for your workflow to complete.

CircleCI will be offering organizations on our free plan 400,000 credits per month to use on medium Docker compute for open source repositories, but they can only be spent on Linux compute. Orgs building OSS Windows projects can still use the 30,000 free credits per month that all projects have access to on those projects, and orgs building OSS macOS projects can request free macOS access by contacting

If you are building a bigger open source project and would like the flexibility of our new plans, let us know how we can help you!

Network egress is triggered by:
• Restoring caches and workspaces to self-hosted runners
• Downloading artifacts
• Job steps that push data outside of CircleCI

Any egress triggered by our cloud executors is not passed on to the customer. We only pass on the egress that is generated through customer-controlled actions.

Learn more about how to calculate and adjust network usage.

Activities that utilize storage include saving caches and workspaces in jobs, uploading test results, and building artifacts.

Learn more about how to calculate and adjust storage usage.

Yes, both network and storage beyond the monthly thresholds are charged at 420 credits/GB ($0.252/GB).

Docker layer caching uses 200 credits per job run in a pipeline (equivalent to $0.12/job run). For example, if your configuration specifies a workflow with three parallel Docker build jobs, you will be charged 600 credits each time these jobs are run in addition to the compute credits/minute usage.

Once you have a CircleCI account, and if you are the admin on the account, you can pay by logging into the CircleCI application and going to Settings → Plan Overview. From there, you can pay via credit card.

Invoicing billing is available on custom annual plans and requires a spend of $6,000 / year.

Credit usage covers access to compute. We prefer to keep usage costs as low as possible to encourage frequent job runs, which is the foundation of a good CI practice. Per-active-user fees cover access to platform features and job orchestration. This includes features like dependency caching, artifact caching, and workspaces, all of which speed up build times without incurring additional compute cost. Our per-active-user charge also allows us to provide support to all customers and deliver additional features like insights and orbs.

Anyone who triggers a build on CircleCI is an active user, regardless of whether they have a CircleCI account. If a user without a CircleCI triggers a build, for example via a pull request on a repo, they are counted as an active user.


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