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AR VR · head to head

Babylon.js vs Unreal Engine

Babylon.js logo

Babylon.js

AR VR

Powerful 3D engine for the web with WebXR

From
Free
Rated
-
Full reviewWebsite
Unreal Engine logo

Unreal Engine

Entertainment

The world's most open and advanced real-time 3D creation tool

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Babylon.js javaScript-only framework; requires developer expertise to implement and maintain; Unreal Engine 5% royalty triggered on any project exceeding $1 million in gross revenue across all revenue sources
  • They diverge on capability: Babylon.js covers WebGL/WebGPU rendering, Unreal Engine covers Real-time ray tracing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Babylon.js and Unreal Engine actually diverge.

Attributes where Babylon.js and Unreal Engine differ
AttributeBabylon.jsUnreal Engine
PlatformsWeb, Native (via Babylon Native Runtime), React NativePC, macOS, Linux, PlayStation, Xbox, Nintendo Switch, iOS, Android, VR, AR
CategoryAR VREntertainment
Founded19751991

Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Babylon.js

  • WebGL/WebGPU rendering
  • Physics engines
  • GUI system
  • Node material editor
  • WebXR
  • glTF
  • Havok physics
  • Azure

Only in Unreal Engine

  • Real-time ray tracing
  • Nanite geometry
  • Lumen global illumination
  • Blueprint visual scripting
  • C++ programming
  • World composition
  • Animation systems
  • Audio engine

What people use each for

The jobs each tool is most often brought in to do.

Babylon.js

  • Web 3D rendering engine for games, e-commerce product configuration, and interactive experiencesnot Unreal Engine
  • Cross-platform 3D development with native runtime and React Native supportnot Unreal Engine

Unreal Engine

  • AAA game developmentnot Babylon.js
  • Indie game creationnot Babylon.js
  • Architectural visualizationnot Babylon.js
  • Film and TV productionnot Babylon.js
  • VR/AR experiencesnot Babylon.js

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Babylon.js

  • JavaScript-only framework; requires developer expertise to implement and maintain

Unreal Engine

  • 5% royalty triggered on any project exceeding $1 million in gross revenue across all revenue sources
  • Smaller mobile game ecosystem compared to Unity, with fewer optimized mobile libraries and live-ops services

Pricing, plan by plan

Babylon.js

Free

No published plan breakdown. See the Babylon.js review.

Unreal Engine

Free
  • Game DevelopmentFree
    • Nanite geometry
    • Lumen global illumination
    • Blueprint visual scripting
  • Non-Game Commercial$1850/year
    • No royalties
    • Enterprise features

Which should you pick?

Choose Babylon.js if

  • You need webgl/webgpu rendering.
  • You want to start without paying.
  • You work on Web, Native (via Babylon Native Runtime), React Native.
  • You also want physics engines.
Babylon.js review

Choose Unreal Engine if

  • You need real-time ray tracing.
  • You want to start without paying.
  • You work on PC, macOS, Linux, PlayStation, Xbox, Nintendo Switch, iOS, Android, VR, AR.
  • You also want nanite geometry.
Unreal Engine review

Questions people ask

Is Babylon.js or Unreal Engine better?
Neither clearly leads. Babylon.js starts at Free and Unreal Engine at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Babylon.js or Unreal Engine?
Babylon.js starts at Free and Unreal Engine at Free.
Does Babylon.js or Unreal Engine run on more platforms?
Babylon.js runs on Web, Native (via Babylon Native Runtime), React Native. Unreal Engine runs on PC, macOS, Linux, PlayStation, Xbox, Nintendo Switch, iOS, Android, VR, AR.
Can I use Babylon.js for free?
Both have a free tier, so you can try either at no cost before committing.
What is Babylon.js best used for?
Babylon.js is most often used for web 3d rendering engine for games, e-commerce product configuration, and interactive experiences, cross-platform 3d development with native runtime and react native support. Of those, web 3d rendering engine for games, e-commerce product configuration, and interactive experiences and cross-platform 3d development with native runtime and react native support are not what Unreal Engine is typically brought in for.
What can Babylon.js do that Unreal Engine cannot?
Babylon.js covers WebGL/WebGPU rendering, Physics engines, GUI system, Node material editor. Unreal Engine covers Real-time ray tracing, Nanite geometry, Lumen global illumination, Blueprint visual scripting.

Answered from the vendors’ own pages

Babylon.js: Is Babylon.js free to use?

Yes, Babylon.js is completely free. It is an open-source web rendering engine licensed under the Apache 2.0 license, which is permissive and does not restrict usage.

Source
Unreal Engine: What is Unreal Engine's royalty structure?

Unreal Engine is free upfront with a 5% royalty on gross revenue worldwide after a project exceeds $1 million in lifetime gross revenue. This includes in-app purchases, advertising, and direct sales but excludes indirect revenue.

Source
Babylon.js: Can I use Babylon.js for commercial purposes?

Yes, the Apache 2.0 license permits free use for commercial purposes. You can use, modify, and distribute Babylon.js in commercial applications as long as you include a copy of the license and provide notice of significant changes.

Source
Unreal Engine: What platforms can Unreal Engine target?

Unreal Engine supports PC, VR, AR, gaming consoles, and mobile devices. The royalty fee applies across all platforms.

Source
Babylon.js: Is there any paid support or commercial version of Babylon.js?

Babylon.js is open source with no paid tiers or commercial version. Community support is available through GitHub and documentation, but there are no official paid support contracts offered.

Source
Unreal Engine: What are Unreal Engine's graphics capabilities?

Unreal Engine 5 features Nanite virtualized geometry and Lumen global illumination, enabling photorealistic AAA workflows. Nanite replaces traditional LOD systems with 128-triangle clusters and software rasterization for superior visual fidelity.

Source
Unreal Engine: Do non-game developers pay royalties?

No. Non-game commercial teams pay $1,850 per seat per year instead of royalties. This covers enterprise use cases outside traditional game development.

Source
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