Trunk

Keep CI reliable with flaky test quarantine and parallel merge queues

citestingmerge-queue

Websitetrunk.io

CategoryCI/CD & code

PricingFreemium

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ABOUT

What is Trunk?

Trunk is a CI reliability platform for detecting and quarantining flaky tests and moving pull requests through parallel merge queues. It works with existing CI providers through its CLI and test-result integrations rather than replacing the build system.

BEFORE YOU SIGN UP

What you should know

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Targets two costly CI bottlenecksTrunk focuses on flaky test failures and serialized merge queues, two problems that become more disruptive as test and pull-request volume grows.

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Works with existing CI providersThe CLI uploads results from GitHub Actions, GitLab CI, Jenkins, Buildkite, CircleCI, and other providers instead of requiring a new build runner.

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Usage is measured in spansThe free plan is limited by repository committers and test spans, and Trunk counts non-bot committers who committed to a private repository in the last 30 days.

Hosted core is proprietaryTrunk publishes integration repositories, but the main CI reliability service is hosted and not an open-source replacement for a CI platform.

COMMUNITY

From the forums

Independent Reddit discussion specifically about Trunk is very limited, so there is no broad community consensus yet. Its public GitHub activity is concentrated around plugins and a GitHub Action, which provides useful integration tooling; the hosted core is proprietary, so teams should validate their workflows and data-handling requirements before adopting it.

— Community sentiment · Reddit

💬Discuss on Reddit ↗

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ABOUT US

Honest, independent, no fluff.

No paid placements. Just a clear look at what this does, what it costs, and what to know before you commit.

FAQ

Questions, answered.

What does Trunk's free plan include?＋

The Free plan is $0 per committer per month for up to 5 committers and up to 5M test spans per month. It includes flaky-test quarantine, pull-request comments, the CLI, VS Code support, and GitHub annotations.

Does Trunk replace GitHub Actions or another CI provider?＋

No. Trunk integrates with your existing CI provider, uploads structured test results, and adds flaky-test analysis or merge-queue coordination around those pipelines.

What happens if I exceed the free limits?＋

Trunk uses soft limits. It does not immediately stop usage, but it shows an upgrade prompt and may contact organizations using substantially more resources than their plan allows.