Bun Pricing in May 2026

Bun is genuinely free as open-source software (MIT license). There are no paid tiers. Real-world Bun costs are $0; you pay your hosting infrastructure normally.

The Free & Open Source offer covers everything. The strategic decision: Bun's value is the all-in-one tool: a single tool that aims to replace Node.js + npm/yarn/pnpm + esbuild/webpack + Jest with significantly faster performance. For broader JavaScript runtimes, Node.js remains the dominant runtime and wins on ecosystem maturity, npm package compatibility, and the gravity of being the default — for production workloads, Node.js is still usually the right choice despite Bun's speed advantage. Deno is the other modern Node alternative with built-in TypeScript, security model, and standard library — increasingly competitive for new projects. The Bun vs Node vs Deno decision in 2026 is genuinely live: Bun for speed-critical workloads where ecosystem maturity is sufficient; Deno for security-and-TypeScript-first; Node for default with maximum compatibility. For specifically package managers (subset of Bun), npm, yarn, pnpm, and Bun all compete — pnpm is often preferred for monorepos and disk efficiency. For specifically bundlers, esbuild, Vite, Turbopack, and Bun's bundler all compete — Vite has become the default for most frontend projects. For specifically test runners, Jest, Vitest, Mocha, and Bun's test runner compete. Vitest is the modern Jest alternative for Vite-based projects. For specifically TypeScript compilation, tsc, esbuild, swc, and Bun all handle this. For server frameworks running on Bun specifically, Hono, Elysia, and standard Express target Bun-friendly server-development.