Buildkite has run continuous integration pipelines for companies like OpenAI, Airbnb and Shopify since 2013. It handles deep parallelization and task orchestration to keep large build queues moving. A 30-day all-access trial is available.

• Buildkite has powered CI pipelines since 2013 for companies like OpenAI, Airbnb, Canva, Uber and Shopify, and now serves AI players like Cursor, Anthropic, Mistral and xAI.
• Its architecture scales builds by parallelizing work across multiple agents rather than depending on one faster runner.
• The company claims its infrastructure supports software reaching over a billion daily users, backed by a 30-day free trial offer.

Buildkite lets you run CI agents on your servers, theirs, or both, supporting anywhere from 1,000 to 100,000+ concurrent runners. It offers deep parallelization, flaky-test detection with auto-quarantine, test splitting, artifact caching, supply-chain security, and universal pipeline triggers. You can start a 30-day trial with no credit card required.

• Buildkite scales to 1,000–100,000+ concurrent CI runners across your own infrastructure, theirs, or a hybrid setup.
• Built-in flaky-test detection auto-quarantines problem tests and splits large suites across runners.
• Includes artifact caching and supply-chain security features alongside universal pipeline triggers for chaining workflows.
• Offers a 30-day full-access trial with no credit card required.