Pricing

A build agent runs on your infrastructure or on Buildkite-hosted compute, and runs one build job at a time. You can run as many agents as you want, in the same or separate queues, and Buildkite will coordinate the work between them. Agents can be securely and reliably deployed across different networks and environments.

Active users are unique users that access the Buildkite system in any given month. Accessing the system includes logging into Buildkite.com, interacting with the Buildkite API, or triggering a build.

We use a 95th percentile (P95) billing method for agent usage. This approach ensures fair billing by focusing on your typical usage while disregarding occasional spikes.

To accomplish this, we measure your agent usage daily, and at month's end, ignore the top 5%. This provides a more stable and predictable billing experience, and reflects your consistent usage patterns rather than rare peak events.

Buildkite Test Engine uniquely identifies each test by its combination of test suite, scope, and name. These “managed tests” are used to power Test Engine’s analytics, as well as to provide a stable basis for billing purposes.

We use a 90th percentile (P90) billing method for managed tests. This approach encourages continuous improvement of your testing practices while maintaining predictable costs.

To accomplish this, Buildkite measures usage by calculating the number of managed tests that have executed (run) at least once each day, and at month's end, disregard the top 10%. By disregarding the highest usage days, you can freely add new tests, experiment with different testing strategies, or temporarily increase test coverage without worrying about billing spikes.

For Package Registries, cost per GB for storage and bandwidth decreases with increasing usage volume.

50GB of storage and bandwidth (combined) per month is always included with Buildkite platform access. Then, additional usage is billed at:

• Tier 1: 1,000GB @ US$1.25 per GB
• Tier 2: 2,500GB @ US$1.00 per GB
• Tier 3: 5,000GB @ US$0.75 per GB
• Tier 4: 20,000GB @ US$0.50 per GB
• Tier 5: 50,000GB @ US$0.25 per GB

Additional volume-based discounts are available to Enterprise customers. Contact us to learn more.

Buildkite Pipelines includes free storage for small, short-lived artifacts—up to 5GB per artifact, retained for six months. Buildkite Package Registries is a paid solution for longer-lived artifacts with more advanced features to support greater scaling, security, and distribution needs.

When you sign up, you start on a 30-day trial of the Pro plan. After 30 days, you’ll need to provide a credit card or contact us to continue to access the Buildkite platform.

There are no limits when using self-hosted agents and the Buildkite SaaS platform. Buildkite handles upwards of 100,000 concurrent agents from some customers.

Buildkite hosted compute has a default reserved concurrency limit of 100 on Linux machines, and 10 on Mac machines. Contact us for custom limits.

If you’d like to discuss transitioning to the new pricing plans, or have any questions at all, please email support@buildkite.com or talk to your Enterprise Customer Success Manager.