OpenUI

OpenUI

Thesys
AG-UI OpenUI

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AG-UI:

About

AG-UI is an open, lightweight, event-based protocol that standardizes how AI agents connect to user-facing applications. Built for simplicity and flexibility, it enables seamless integration between AI agents, real-time user context, and user interfaces. AG-UI is designed for agent-human interaction: during agent executions, backends emit events compatible with standard AG-UI event types, and agent backends can accept simple AG-UI-compatible inputs as arguments. It works with any event transport, including SSE, WebSockets, webhooks, and other streaming systems, while providing a flexible middleware layer that ensures compatibility across diverse environments. AG-UI brings agents into user-facing applications and complements the wider agentic protocol stack: MCP gives agents tools, A2A allows agents to communicate with other agents, and AG-UI connects agents directly to the user interface.
OpenUI:

About

OpenUI is an open-source (MIT) generative UI framework for AI agents. Instead of plain text, your agent writes OpenUI Lang, a compact, streaming-first language, and OpenUI renders it progressively as real UI: charts, tables, forms, cards and layouts. Rendering is safe by default: the model can only use components you register and no generated code is executed, so your design system stays in control. A framework-agnostic core powers first-party runtimes for React, Vue, Svelte and Angular, with ready-made chat interfaces and integrations for LangChain/LangGraph, the Vercel AI SDK, Mastra, Google ADK, assistant-ui, CopilotKit, AG-UI and A2UI. In its published benchmark, OpenUI Lang uses about half the tokens of equivalent JSON UI formats, so interfaces stream faster and cost less.
AG-UI:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
OpenUI:

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Supported
AG-UI:

Audience

AI product developers building interactive agent-powered applications that need structured streaming, tool calls, shared state, and human-in-the-loop control
OpenUI:

Audience

Developers building AI agents, copilots and chat apps who want agents to answer with interactive UI instead of text
AG-UI:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
OpenUI:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
AG-UI:

API

Offers API Not Supported
OpenUI:

API

Offers API Not Supported
AG-UI:

Screenshots and Videos

OpenUI:

Screenshots and Videos

No images available
AG-UI:

Pricing

Free
Free Version Supported
Free Trial Not Supported
OpenUI:

Pricing

Free
Free Version Supported
Free Trial Not Supported
AG-UI:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
OpenUI:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
AG-UI:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
OpenUI:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
AG-UI:

Company Information

AG-UI
United States
ag-ui.com
OpenUI:

Company Information

Thesys
Founded: 2024
United States
www.openui.com
AG-UI:

Alternatives

OpenUI:

Alternatives

LangChain

LangChain

5.0 out of 5 stars
AG-UI:
OpenUI:
AG-UI:
OpenUI

OpenUI

Thesys
OpenUI:
AG-UI:
OpenUI:
LangGraph

LangGraph

LangChain
AG-UI:
Deep Agents

Deep Agents

LangChain
OpenUI:
AG-UI:

Categories

Agentic AI Supported
UX Supported
OpenUI:

Categories

AG-UI:

Integrations

Agent Development Kit (ADK) Supported
LangGraph Supported
Mastra Supported
A2UI Not Supported
AG-UI Not Supported
Agentivity Supported
Agno Supported
CopilotKit Not Supported
CrewAI Supported
LangChain Not Supported
LlamaIndex Supported
Model Context Protocol (MCP) Supported
OpenUI Supported
PydanticAI Supported
Vercel AI SDK Not Supported
OpenUI:

Integrations

Agent Development Kit (ADK) Supported
LangGraph Supported
Mastra Supported
A2UI Supported
AG-UI Supported
Agentivity Not Supported
Agno Not Supported
CopilotKit Supported
CrewAI Not Supported
LangChain Supported
LlamaIndex Not Supported
Model Context Protocol (MCP) Not Supported
OpenUI Not Supported
PydanticAI Not Supported
Vercel AI SDK Supported
AG-UI:
Claim AG-UI and update features and information
Claim AG-UI and update features and information
OpenUI:
Claim OpenUI and update features and information
Claim OpenUI and update features and information