Which components are free/open-source, and which are PRO-only?

[sentience]

The FAQ on the Untitled UI React home page says:

Untitled UI React base components are 100% free and open source. These include foundational UI components such as buttons, inputs, text editors, tooltips, and other useful building blocks for modern interfaces and websites.

You can also access hundreds of additional free and open-source application UI components and marketing website sections. These are marked as "free" in our docs—you can copy and use these in unlimited personal and commercial projects!

This appears to be incorrect. I don't see any components marked as "free" in the component docs. What I do see is that some component demos in the docs have a Preview/Code toggle, while others have "Get the code" link that goes to the page to purchase PRO. In some components (e.g. Sidebar navigations) it seems like some of a component's features are free while others are PRO.

CleanShot.2025-12-19.at.14.28.41.mp4

Because the line between free and PRO is so hard to see, we're having a really hard time understanding exactly what we would be buying with Untitled UI React PRO, and how many licenses we might need. Is crossing the line into PRO something that we will only need to do now and then, and therefore we might get by with just a couple of seats for our design system team's engineers? Or are we going to need licenses for all of our engineers, because almost every UI development task we take on will make some use of PRO components? We aren't sure right now, and it isn't clear how we can find out.