# Builds now start up to 30% faster

**Published:** September 16, 2025 | **Authors:** Ali Smesseim, Guðmundur Bjarni Ólafsson, Janos Szathmary, Luke Phillips\-Sheard

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The build cache stores files from previous builds to speed up future ones. We've improved its performance by downloading parts of the cache in parallel using a worker pool.

This decreased the build initialization time by **30% on average**, reducing build times by up to 7 seconds for all plans.

This is enabled automatically for all new builds and adds to the [build initialization improvements](https://vercel.com/changelog/45-percent-faster-build-initialization) previously launched.

Learn more about [builds on Vercel](https://vercel.com/docs/deployments/builds).

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📚 **More updates:** [View all changelog entries](/changelog/sitemap.md) | [Blog](/blog/sitemap.md)