# Best CI Tools

> The best CI tools compared side by side on the same stated criteria (push-to-verdict time, caching, parallelism, pricing model, migration effort, security, agent-heavy workloads), with every fact linked to the vendor's own documentation or pricing page.

Tools compared: Graphide CI (Runner layer for GitHub Actions); GitHub Actions (CI/CD built into GitHub); GitLab CI/CD (CI/CD built into GitLab); CircleCI (Hosted CI platform); Buildkite (CI control plane, bring your own agents); Jenkins (Open-source automation server you host); Depot (Runner layer for GitHub Actions); Blacksmith (Runner layer for GitHub Actions).

## Main pages

- [Best CI tools compared](https://bestcitools.com/): side-by-side table with filters, and which tool fits which team
- [How we compare CI tools](https://bestcitools.com/how-we-compare/): The seven criteria Best CI Tools uses for every CI tool, where each fact comes from, and how to benchmark a tool against your own baseline.
- [Faster GitHub Actions runners compared](https://bestcitools.com/faster-github-actions-runners/): Ways to speed up existing GitHub Actions workflows compared: default GitHub-hosted runners, Graphide CI, Depot and Blacksmith on caching, parallelism and keeping the same pass/fail verdict.
- [Choosing CI when agents write the code](https://bestcitools.com/ci-for-agent-written-code/): How coding agents' higher change volume affects CI queue time, test cost and verification, and which CI criteria matter most when agents write most of the code.
- [Switching CI tools: a migration checklist](https://bestcitools.com/migrating-ci/): A checklist for moving CI: workflows, secrets, caches and runners, and checking that pass/fail verdicts stay identical before you switch off the old system.

## Head-to-head

- [All head-to-head comparisons](https://bestcitools.com/compare/)
- [GitHub Actions vs CircleCI](https://bestcitools.com/compare/github-actions-vs-circleci/): GitHub Actions and CircleCI compared on configuration, runners, caching, scaling and migration cost, with who should pick which.
- [GitHub Actions vs Buildkite](https://bestcitools.com/compare/github-actions-vs-buildkite/): Hosted GitHub Actions workflows compared with Buildkite's bring-your-own-infrastructure model on control, maintenance and speed.
- [GitHub Actions vs GitLab CI/CD](https://bestcitools.com/compare/github-actions-vs-gitlab-ci/): GitHub Actions and GitLab CI/CD compared on configuration, runners, caching, pricing and what moving between them costs.
- [GitHub Actions vs Jenkins](https://bestcitools.com/compare/github-actions-vs-jenkins/): GitHub Actions and Jenkins compared on hosting, maintenance, plugins, cost and migration, with who should stay and who should move.
- [CircleCI vs Buildkite](https://bestcitools.com/compare/circleci-vs-buildkite/): CircleCI's hosted executors compared with Buildkite's own-agents model on control, test splitting, maintenance and cost.

## Blog

- [Blog](https://bestcitools.com/blog/)