LanguageGUI

LanguageGUI is an open-source design system and UI kit specifically built for large language models (LLMs). It enables developers and designers to transform raw text outputs from LLMs into structured, interactive graphical user interfaces. The kit provides over 100 unique UI components, including more than 20 types of chat bubbles, 10 conversational UI widgets, 5 customizable chat sidebars, 8 prompt box variations, and 30 pre-built screens that can be directly used or modified to accelerate interface development. These components are designed to handle diverse use cases in conversational AI, such as multi-prompt workflows, dynamic response rendering, and context-aware sidebar navigation. The UI kit supports dark mode out of the box and is built entirely with Figma Auto Layout and design variables, making it easy to maintain consistency across different screen sizes and themes. Each component is crafted with precise spacing, typography, and color tokens, allowing teams to quickly adapt the visuals to match their brand identity without rewriting core interactions. LanguageGUI is particularly useful for prototyping and shipping interfaces for chatbots, virtual assistants, code generation tools, and any application where LLMs generate variable-length, structured responses that need to be displayed as more than plain text. For example, a chat bubble component can render a list of bullet points as a formatted card, while a sidebar widget can display ongoing conversation context, user preferences, or tooltips. The multi-prompt workflow screens help designers visualize how a user might interact with an LLM across several steps—like asking for a recipe, then refining ingredients, then cooking instructions—each step producing a different UI layout. The kit also includes pre-built