Softwr

Libraries · head to head

Base UI vs Radix UI

Base UI logo

Base UI

Libraries

Unstyled accessible React primitives built by the teams behind Radix, Material UI and Floating UI

From
Free
Rated
-
Full reviewWebsite
Radix UI logo

Radix UI

Web Development

Unstyled, accessible React component primitives

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Base UI nothing is styled, so the first weeks produce a functional but unfinished interface, and a team without design capacity will ship something worse looking than a styled library would have given them free.; Radix UI you write all the styling, so time to a finished interface is much longer than with a styled library
  • They diverge on capability: Base UI covers Focus and keyboard management, Radix UI covers Accessibility built in.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Base UI and Radix UI actually diverge.

Attributes where Base UI and Radix UI differ
AttributeBase UIRadix UI
CategoryLibrariesWeb Development

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), platforms (Web), 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 Base UI

  • Focus and keyboard management
  • ARIA state handling
  • Collision aware positioning
  • Composable parts
  • Server rendering safe

Only in Radix UI

  • Accessibility built in
  • Composable API
  • Controlled or uncontrolled

Both cover

  • Unstyled primitives

What people use each for

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

Base UI

  • Building a design system where the visual language must be entirely your ownnot Radix UI
  • Applications with an accessibility conformance obligation that need correct behaviour as the foundationnot Radix UI
  • Replacing a styled component library that is being fought rather than usednot Radix UI
  • Teams already writing Tailwind who want behaviour without a second opinion about appearancenot Radix UI

Radix UI

  • Design systems that need correct accessibility without inherited visual opinionsnot Base UI
  • Replacing hand-built dropdowns and dialogs that have accessibility bugsnot Base UI
  • Teams with a designer whose output should not be constrained by a library’s themenot Base UI

Where each one falls short

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

Base UI

  • Nothing is styled, so the first weeks produce a functional but unfinished interface, and a team without design capacity will ship something worse looking than a styled library would have given them free.
  • The project is young and its APIs have changed between releases, so upgrades need reading rather than accepting, and version pinning is currently a necessity.
  • Component coverage is narrower than the mature styled libraries, so date pickers, tables and rich inputs will still come from elsewhere or be built.
  • There is no commercial support and no conformance certification to point at, so an organisation that must evidence accessibility still has to commission its own audit.
  • Consolidating the Radix and Material UI unstyled efforts here leaves the earlier libraries with an uncertain maintenance future, which is a live risk for the many applications built on Radix through shadcn/ui.

Radix UI

  • You write all the styling, so time to a finished interface is much longer than with a styled library
  • Composable part-based APIs are more verbose than a single component with props
  • Covers primitives rather than complex widgets, so data grids and date pickers come from elsewhere

Pricing, plan by plan

Base UI

Free
  • Base UI$undefined/year
    • MIT licensed and free for commercial use
    • No paid tier, no enterprise edition and no support contract available

Radix UI

Free
  • Radix UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose Base UI if

  • You need focus and keyboard management.
  • You want to start without paying.
  • You also want aria state handling.
Base UI review

Choose Radix UI if

  • You need accessibility built in.
  • You want to start without paying.
  • You also want composable api.
Radix UI review

Questions people ask

Is Base UI or Radix UI better?
Neither clearly leads. Base UI starts at Free and Radix UI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Base UI or Radix UI?
Base UI starts at Free and Radix UI at Free.
Does Base UI or Radix UI run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Base UI for free?
Both have a free tier, so you can try either at no cost before committing.
What is Base UI best used for?
Base UI is most often used for building a design system where the visual language must be entirely your own, applications with an accessibility conformance obligation that need correct behaviour as the foundation, replacing a styled component library that is being fought rather than used, teams already writing tailwind who want behaviour without a second opinion about appearance. Of those, building a design system where the visual language must be entirely your own and applications with an accessibility conformance obligation that need correct behaviour as the foundation are not what Radix UI is typically brought in for.
What can Base UI do that Radix UI cannot?
Base UI covers Focus and keyboard management, ARIA state handling, Collision aware positioning, Composable parts. Radix UI covers Accessibility built in, Composable API, Controlled or uncontrolled. Both handle Unstyled primitives.

Answered from the vendors’ own pages

Base UI: Does this replace Radix UI?

It is where much of the same maintenance attention has moved. If you are on Radix, watch its release activity rather than assuming continuity.

Radix UI: Is Radix UI free?

Yes, open source under the MIT licence.

Base UI: What does it affect for shadcn/ui users?

shadcn/ui components are built on Radix primitives, so the health of Radix is your dependency question, not a theoretical one.

Radix UI: Why use unstyled components?

Because accessibility is the hard part and visual design is the part teams want to own. Radix gives the first and stays out of the second.

Base UI: Is it ready for production?

For the components it covers, yes, provided you pin versions and read release notes. The range is narrower than mature libraries, so check coverage against your needs first.

Radix UI: What is the relationship with shadcn/ui?

shadcn/ui is built on Radix primitives, adding Tailwind styling and copy-paste distribution on top.

Share

Related pages

More on Base UI

More on Radix UI

Keep looking

Other head to heads