Used by OpenAI
Apps SDK UI
by OpenAI · openai.github.io
Colors
BasePrimaryTextBorderSoft
Typeface
AaSF Pro / Segoe UIRadius
612∞
Screenshot 1 of 2What it is
OpenAI's design system for apps inside ChatGPT: black pill buttons, lots of white space, Tailwind 4 tokens and Radix-based components.
Design SystemsA design system is more than a component set: it comes with tokens for color, type and spacing, theming, and rules for how parts fit together.
Good for
- Products that need one consistent look
- Theming and dark mode
- Teams sharing one set of components
Alternatives to Apps SDK UI
Other Design Systems kits.
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The components behind GitHub's own product pages, from issues to settings: clean, information-dense and built for developers.
Base WebFree
Uber's React design system: black and white, high contrast and plain shapes, the look of Uber's own web tools.
CloudscapeFree
The design system behind the AWS console: data tables, forms and dashboards built for long working sessions.