Babylon.js vs Three.js
Verified Oct 2026
Both render 3D in the browser with WebGL and WebGPU. Babylon.js is a full engine with physics, GUI, audio, and tooling built in; three.js is a rendering library where you choose the rest.
What actually differs
Babylon.jsThree.js
ScopeBabylon.js: Engine: collisions, Havok physics, GUI, audio, animation, particles, WebXRThree.js: Library: scenes, cameras, lights, materials, loaders; physics, input, and game structure are up to you
ToolingBabylon.js: Inspector, Node Material Editor, and other visual editorsThree.js: A scene editor and a Chrome DevTools extension
Graphics APIsBabylon.js: WebGL 1 and 2, and WebGPUThree.js: WebGL, with a WebGPU renderer alongside
LicenseBabylon.js: Apache-2.0Three.js: MIT
Pick Babylon.js when
- You're building a game and want physics, UI, and debugging tools in one package
- You want an official inspector and visual material editors
Pick Three.js when
- You want a lightweight renderer and the freedom to choose physics and architecture
- Product viewers, visualizations, and sites where 3D is one part of a larger page
What a dev would do
Games usually start faster on Babylon.js; custom or embedded 3D usually fits three.js. Both are mature and open source.