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What is OpenUI?

OpenUI is an open-source generative user interface framework for AI agents, licensed under the MIT agreement. Instead of merely using basic text, this framework employs OpenUI Lang, a specialized language tailored for progressive streaming, which is then transformed into interactive components like charts, tables, forms, cards, and layouts by OpenUI. The rendering process is designed with security in mind, limiting the model to only the components you've registered, which ensures that no generated code is executed, thus preserving control over your design system. Its foundational architecture is agnostic to frameworks, accommodating first-party runtimes for popular libraries such as React, Vue, Svelte, and Angular, while also offering pre-built chat interfaces and integrations with a variety of tools like LangChain/LangGraph, the Vercel AI SDK, Mastra, Google ADK, assistant-ui, CopilotKit, AG-UI, and A2UI. OpenUI Lang is noted for its efficiency, reportedly using about half the tokens compared to traditional JSON UI formats, which facilitates faster streaming of interfaces at a lower cost. This remarkable efficiency not only improves performance but also positions OpenUI as a smart and economical choice for developers eager to build advanced user interfaces with speed and ease. Ultimately, the combination of security, flexibility, and cost-effectiveness makes OpenUI a compelling choice for modern application development.

What is A2UI?

A2UI serves as a declarative user interface protocol that enables AI agents to design captivating and interactive user interfaces that function smoothly across web, mobile, and desktop environments without requiring the execution of arbitrary code. By avoiding dependencies on text-based communication or potentially hazardous techniques like sending HTML or JavaScript, A2UI allows agents to express their UI objectives through clearly defined JSON messages that specify components, layouts, and data bindings, which client applications can render using their own secure, pre-approved components. This approach effectively separates the creation of user interfaces from their implementation, ensuring that the interfaces remain secure, conform to the design standards of the host application, and adapt well across various platforms. Specifically designed to be user-friendly for large language models, A2UI employs a simple, flat JSON format that enables agents to incrementally build and adjust interfaces in real time, thus promoting progressive rendering and enriching user experiences. Moreover, this forward-thinking strategy not only simplifies the development workflow but also guarantees that users enjoy a consistently superior interface, irrespective of the device they are utilizing, ultimately enhancing overall satisfaction with the application. By prioritizing security and flexibility, A2UI represents a significant advancement in the realm of user interface design.

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Integrations Supported

A2UI
AG-UI
Agent Development Kit (ADK)
CopilotKit
LangChain
LangGraph
Mastra AI
Vercel AI SDK

Integrations Supported

HTML
JSON
JavaScript
OpenUI

API Availability

API Availability

Pricing Information

Free
Free Version

Pricing Information

Free
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Thesys

Date Founded

2024

Company Location

United States

Company Website

www.openui.com

Company Facts

Organization Name

A2UI

Company Location

United States

Company Website

a2ui.org

Categories and Features

AI Development

Not specified

Categories and Features

Agentic AI

Not specified

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