I’m trying to understand the roadmap here- Is Babylon X slated to drop backwards compatibility? Is Babylon Lite a precursor to the full Babylon X? Is Babylon Lite going to exist alongside Babylon X? Is 9 the last stop for WebGL? I want to aim my projects correctly. The Lite performance metrics …

Babylon Lite is Babylon X & ditches backward compatibility. Versions of Babylon 9, 10, 11… and later will continue to exist and be updated. There is no end to WebGL

I recommend you to read the announcement we did in detail, as it covers these questions :slight_smile: Introducing Babylon Lite - Announcements - Babylon.js In particular this part at the end: [image]

Not sure what Babylon X is (maybe something I have missed?), but if you mean Babylon.js 10 - it will continue following the guidelines of the main babylon.js repo. Babylon Lite is not backwards compatible (though we do our best not to change public contracts unless needed)

[image] RaananW: Not sure what Babylon X is (maybe something I have missed?) Babylon X was a talk 2 years ago. It was to survey users on a potential improvement of the engine to make it faster, lighter… Babylon Lite is finally what was released 2 years later. [image] …

I completely forgot about this :slight_smile: Thanks for linking it.

So a compatibility branch and a performance branch with no crossover. “..switch between them..” seems misleading given disparate architectures. You’re just going to maintain two almost identical projects forever?

The switch between them in a possibility we offer you in case you need it. You will need for sure to adapt the code, but we promise you similar visual output. Both engines serve different needs and scenarios, we believe both have their place in the community (that’s why we started lite :)).

What’s the specific compatibility issue you’re worried about? If it’s not a blocker, Lite’s probably worth trying since 9+ aren’t going anywhere.

Babylon X vs. Lite vs. 9

Questions

ryantrem July 14, 2026, 5:20pm 9

Also we do have an experimental compatibility layer (partial BJS API on top of Lite). See Babylon Lite Compat - Announcements - Babylon.js

Topic		Replies	Views
Introducing Babylon Lite Announcements	212	3451	July 14, 2026
Something FAST is coming! Announcements	68	1738	June 22, 2026
Babylon Lite Compat Announcements	3	251	June 29, 2026
Babylon 10 Poll Announcements	62	2334	April 20, 2024
WebXR support for Babylon Lite Feature requests webgpu , webxr , lite	1	53	July 10, 2026

Babylon X vs. Lite vs. 9

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