Bun vs Node.js
Bun and Node.js side by side: what each one is, verified plan pricing and install commands where we have them, and the full review of each.
Bun
All-in-one JavaScript runtime, bundler, test runner, and package manager. Rewritten in Rust as of Bun 1.4 (August 2026), drop-in compatible with Node, dramatically faster install and start times.
Node.js
The original server-side JavaScript runtime. V8 under the hood, npm ecosystem, and the default backend runtime for most production deployments.
At a glance
| Field | | N Node.js |
|---|---|---|
| Category | Infrastructure | Infrastructure |
| Website | bun.sh | nodejs.org |
| Pricing | Free and open source (MIT) | Free and open source (MIT) |
| Install | curl -fsSL https://bun.com/install | bash or npm install -g bun or brew install oven-sh/bun/bun | curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.8/install.sh | bash or nvm install 24 |
| Models | Not an AI model runner: a JavaScript and TypeScript runtime built on JavaScriptCore, with npm package compatibility and its own package manager, bundler, and test runner. Bun 1.4 targets Node.js 26.3.0 API compatibility. | Not an AI model runner: a JavaScript runtime built on V8 that ships with npm. The download page installs the 24.x LTS by default, and starting with Node.js 27 the release cycle becomes annual, with every major moving to LTS after its Current phase. |
| Last verified | October 17, 2026 | October 17, 2026 |
In Depth
Bun
Bun bundles a JavaScript runtime, package manager, bundler, and test runner into a single binary written in Rust. It is largely Node-compatible, so most apps drop in without changes, and it is much faster: bun install routinely runs 10x faster than npm, and the runtime starts cold faster than Node. Bun also has first-class TypeScript and JSX support out of the box. It is the runtime of choice for new TypeScript projects that want speed without giving up the npm ecosystem.
Node.js
Node.js is the runtime that made server-side JavaScript a thing. It is built on V8, ships with npm, and powers the majority of production JavaScript backends. Recent versions added a native test runner, a stable watch mode, and built-in TypeScript support via type stripping. Node remains the safest default: it is what your hosting provider runs, what your dependencies expect, and what your team probably already knows. The trade-off versus Bun and Deno is raw speed and out-of-the-box ergonomics.
FAQ
Answers taken from each tool's verified fact sheet, with the date it was last checked.
How much does Bun cost?
As of October 17, 2026: Free and open source (MIT). Source: Bun installation docs, Bun blog, Bun v1.4.3, Bun 1.4, oven-sh/bun LICENSE.
How do I install Bun?
Official install commands as of October 17, 2026: curl -fsSL https://bun.com/install | bash or npm install -g bun or brew install oven-sh/bun/bun.
Which models does Bun use?
As of October 17, 2026: Not an AI model runner: a JavaScript and TypeScript runtime built on JavaScriptCore, with npm package compatibility and its own package manager, bundler, and test runner. Bun 1.4 targets Node.js 26.3.0 API compatibility.
How much does Node.js cost?
As of October 17, 2026: Free and open source (MIT). Source: Download Node.js, Node.js 26.12.0 release notes, October 2026 security releases, Node.js releases and schedule, Node.js release index, nodejs/node LICENSE.
How do I install Node.js?
Official install commands as of October 17, 2026: curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.8/install.sh | bash or nvm install 24.
Which models does Node.js use?
As of October 17, 2026: Not an AI model runner: a JavaScript runtime built on V8 that ships with npm. The download page installs the 24.x LTS by default, and starting with Node.js 27 the release cycle becomes annual, with every major moving to LTS after its Current phase.
