Libraries · pricing
Base UI pricing
Base UI publishes a single tier. Below is what it costs, what it covers, and how that compares with the libraries tools listed alongside it.
As of 31 August 2026, Base UI pricing is free. Figures are the vendor's list prices as recorded on this page's last check; the vendor's site is the final word.
- Entry price
- Free
- Model
- Open source, no licence fee
- Tiers
- 1
- Free tier
- Yes
Base UI plans, side by side
Every published tier in ascending order of price, with the number of features each one lists. An absence here means the record does not itemise it, not that the tier lacks it.
| Plan | Price | Features listed | Step up from the tier below |
|---|---|---|---|
| Base UI | On request | 2 | Entry tier |
What the product covers
The full Base UI feature record, grouped as the catalogue groups it. This is the product as a whole; the record does not map every feature onto a specific tier.
Other
- Unstyled primitives
- Focus and keyboard management
- ARIA state handling
- Collision aware positioning
- Composable parts
- Server rendering safe
People bring Base UI in 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. If that is not the job you are buying for, the alternatives to Base UI are worth a look before you commit to a tier.
How that compares in Libraries
Too few libraries tools in this directory publish a starting price to quote a meaningful median, so the table below is a like-for-like list rather than a ranking.
| Tool | Entry price | Model | Rated | Head to head |
|---|---|---|---|---|
| Base UI (this page) | Free | Open source, no licence fee | - | |
| Libby | Free | Free with a participating library card, no subscription | - | vs Base UI |
| Hoopla | Free | Free with a participating library card, capped by monthly borrow limit | - | vs Base UI |
| Leafmap | Free | Open source, no licence fee | - | vs Base UI |
| PDAL | Free | Open source, no licence fee | - | vs Base UI |
| daisyUI | Free | Open source, no licence fee | - | vs Base UI |
| Mantine | Free | Open source, no licence fee | - | vs Base UI |
Ratings are aggregated from third-party sources and imported with each catalogue entry, they are not reviews hosted on Softwr. How each figure is used is set out on the Base UI badges page.
Before you pay for Base UI
Three things this page cannot tell you, and all three change the bill. The record carries a price and a billing period but not the unit - per-seat and flat-rate pricing are indistinguishable in this data, so a five-person team may be looking at five times the figure above. It carries no annual rate, so any discount for paying yearly is not something this page can quote. And it carries no trial length.
What it can tell you is the shape of the ladder: a single tier at On request. Because there is a free tier, the cheapest way to answer the rest is to use it before paying anything.
Base UI runs on web, and is published by Base UI (open source project, maintainers from MUI, Radix and Floating UI) of Remote, distributed maintainers. The full record is on the Base UI review, and the rest of the category is under best libraries tools.
Base UI pricing questions
- How much does Base UI cost?
- Base UI publishes a single tier, Base UI, at On request.
- Does Base UI have a free plan?
- Yes, Base UI is recorded as Open source, no licence fee, so it can be used without paying.
- Which libraries tools can I use without paying?
- 8 of the 8 libraries tools listed alongside Base UI have a free tier: Libby, Hoopla, Leafmap, PDAL, daisyUI.
- What am I actually paying for with Base UI?
- The record lists 6 features across 1 area: other. In practice it is brought in 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.
- Does Base UI charge per user?
- The record carries a price and a billing period for each of its 1 tiers, but not the unit that price is charged in. Per-seat and flat-rate billing look identical in this data, so check the vendor's page before budgeting for a team.
- Are these Base UI prices current?
- They are what the catalogue entry holds, refreshed when the entry is. Vendors change pricing without notice and nobody at Softwr re-verifies each tier by hand, so treat this as a structured summary and the vendor's own pricing page as the authority.
- What should I compare Base UI against before paying?
- The closest libraries tools in this directory are Libby, Hoopla, Leafmap, PDAL. Each has a side-by-side comparison with Base UI covering price, platforms and features.