Bun 1.4 and Vite 8 compete on speed

Bun 1.4 includes a native bundler that runs 1.75x faster than esbuild. Speed defines the race.

Vite 8 changed the comparison when it adopted the Rolldown bundler. This Rust-based tool handles production builds and claims 10 to 30 times faster results. One vendor report says Linear moved from 46 seconds to 6 seconds after the update. Bun provides a native bundler that works with TypeScript and JSX. It eliminates the need for Babel or tsc. Bun 1.4 provides native TypeScript and JSX support without extra configuration, while Vite 8 relies on Oxc for transformations and Rolldown for its unified Rust-based bundling engine to manage all production outputs for every modern web developer today.

Bun wins on speed.

In 2026, Bun 1.4 hits 48,243 requests per second in synthetic HTTP tests. This exceeds the 25,181 requests per second reached by Node.js 26.7.0. Bun also provides a 60 percent improvement in macOS build performance due to I/O threadpool optimization. The AbortSignal.timeout implementation is 40 times faster than previous versions. Bun also reduces JavaScript memory usage by 10 to 30 percent in frameworks like Next.js and Elysia. For filesystem watching, Bun uses platform-specific APIs like kqueue on macOS and inotify on Linux. Bun 1.3 also includes a unified SQL API that supports MySQL, MariaDB, PostgreSQL, and SQLite.

Ecosystem depth and migration risks

Vite provides a massive plugin ecosystem. It handles CSS, assets, and framework-specific logic through dedicated plugins. Bun relies on a different plugin API. Vite handles the ecosystem.

Migrating a project from Webpack to Vite involves several steps. For the Webamp project, developers added Vite to package.json, moved index.html to the root, adjusted asset import paths, and added interface definitions. This migration resulted in a production build time of 3.37 seconds for Vite, compared to 10.5 to 11.1 seconds for Webpack. For React-slick, the migration required adding Vite to package.json, moving index.html to the root, adding a script module tag for the entry point, renaming all files from .js to .jsx, replacing require statements with ES module imports, and copying resolve.alias from the Webpack configuration. This React-slick migration showed a production build time of 0.46 seconds for Vite versus 1.49 to 1.62 seconds for Webpack. The development build time for React-slick was 0.02 seconds with Vite, compared to 0.49 to 0.61 seconds with Webpack.

Will Bun ever match the plugin depth of Vite?

Developers express mixed feelings about Bun in 2026. Some developers say Bun is 100% ready for development, but others face bugs in production. Bun has roughly 4.8k open issues on GitHub.

The hybrid workflow

Most teams use both tools in 2026. They use Bun for package management and script execution. They use Vite for frontend development and production builds.

You should test your own workload. Bun 1.4 provides a 210 millisecond install time with a warm cache. This beats the 4.45 seconds needed for npm. Bun also includes a Redis client that is 7.9 times faster than the redis package. Bun 1.4 provides native support for TypeScript and JSX. Bun also provides the runtime, the package manager, the test runner, and the bundler. Bun provides a way to create standalone executables using the –compile flag.

Bun is a runtime. Vite is a build tool.