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Web Development · head to head

MUI vs Ray

MUI logo

MUI

Web Development

React component library implementing Material Design

From
Free
Rated
-
Full reviewWebsite
Ray logo

Ray

Machine Learning

Scale AI and Python applications

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: MUI escaping the Material Design look takes more theming effort than teams expect; Ray windows support is beta and multi node Ray clusters are untested on Windows
  • They diverge on capability: MUI covers Large component set, Ray covers Distributed computing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which MUI and Ray actually diverge.

Attributes where MUI and Ray differ
AttributeMUIRay
Pricing modelOpen-source core with paid tiers for advanced componentsfreemium
PlatformsWebLinux, Mac, Windows
CategoryWeb DevelopmentMachine Learning
FoundedUnknown2019

Identical on both: starting price (Free), 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 MUI

  • Large component set
  • Theming system
  • Accessibility
  • TypeScript support

Only in Ray

  • Distributed computing
  • Ray Train
  • Ray Tune
  • RLlib
  • Ray Serve
  • PyTorch
  • TensorFlow
  • Hugging Face

What people use each for

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

MUI

  • Building an admin or internal application quickly with components that already worknot Ray
  • Teams needing accessible complex widgets without building themnot Ray
  • Products where Material Design is an acceptable or desired starting pointnot Ray

Ray

  • Distributed AI model training and servingnot MUI
  • Large-scale data processingnot MUI
  • Reinforcement learning workloadsnot MUI
  • ML inference servingnot MUI

Where each one falls short

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

MUI

  • Escaping the Material Design look takes more theming effort than teams expect
  • Bundle size is significant, and careless imports pull in far more than needed
  • Advanced components such as the full data grid require a paid licence
  • Major version upgrades have historically required real migration work

Ray

  • Windows support is beta and multi node Ray clusters are untested on Windows
  • Windows lacks copy on write forking, which raises memory requirements, and Ray code assumes UNIX filenames
  • Multi node clusters are untested on Apple Silicon Macs
  • The Java API is experimental and community supported only, and requires matching Java and Python versions
  • Python 3.13 support is beta

Pricing, plan by plan

MUI

Free
  • CommunityFree
    • Core component library
    • Theming
    • Community support

Ray

Free
  • Open SourceFree
    • Full Ray framework
    • All libraries
    • Community support
  • Anyscale PlatformFree
    • Managed infrastructure
    • Enterprise support
    • SLAs

Which should you pick?

Choose MUI if

  • You need large component set.
  • You want to start without paying.
  • You also want theming system.
MUI review

Choose Ray if

  • You need distributed computing.
  • You want to start without paying.
  • You work on Linux, Mac, Windows.
  • You also want ray train.
Ray review

Questions people ask

Is MUI or Ray better?
Neither clearly leads. MUI starts at Free and Ray at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, MUI or Ray?
MUI starts at Free and Ray at Free.
Does MUI or Ray run on more platforms?
MUI runs on Web. Ray runs on Linux, Mac, Windows.
Can I use MUI for free?
Both have a free tier, so you can try either at no cost before committing.
What is MUI best used for?
MUI is most often used for building an admin or internal application quickly with components that already work, teams needing accessible complex widgets without building them, products where material design is an acceptable or desired starting point. Of those, building an admin or internal application quickly with components that already work and teams needing accessible complex widgets without building them are not what Ray is typically brought in for.
What can MUI do that Ray cannot?
MUI covers Large component set, Theming system, Accessibility, TypeScript support. Ray covers Distributed computing, Ray Train, Ray Tune, RLlib.

Answered from the vendors’ own pages

MUI: Is MUI free?

The core library is open source and free. Advanced components, including the full-featured data grid, require a paid licence.

Ray: Is Ray free?

Yes. Ray is free and open source software with over 34,800 GitHub stars and 1,000+ contributors. Users can download and use the Ray framework at no cost.

Source
MUI: Can MUI look non-Material?

Yes, through the theming system, but a substantial departure takes real work. Teams wanting full design control often prefer unstyled primitives instead.

Ray: Is there a paid option for Ray?

Yes. Anyscale, the managed platform built by Ray's creators, offers paid tiers with enterprise features like governance and advanced tooling. Specific Anyscale pricing details are not listed on the Ray website.

Source
MUI: Does MUI handle accessibility?

Components follow WAI-ARIA patterns by default, which is a large part of why teams adopt it.

Ray: Can I try Ray with credits?

Yes. New users can try Ray with $100 credit on Anyscale's managed platform to explore the service.

Source
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