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Introduction Quickstart Coding Agents

Concepts

Architecture Generative UI OSS vs Enterprise

Agentic Protocols

Build Chat UIs

CSS Customization Slots (Subcomponents)Fully Headless UI Reasoning Messages

Multimodal Attachments Voice Reasoning

Build Generative UI

Components as Tools Tool Call Rendering State Rendering

Add Agent Powers

Frontend Tools Shared State

Human-in-the-Loop

Sub-Agents Agent Config Programmatic Control

Runtime

Copilot Runtime Use any model router Connect AG-UI agents Deploy to any runtime Authentication

Observe & Operate

Inspector VS Code Extension

Enterprise

How the Enterprise Intelligence Platform Works How Threads & Persistence Work Observability Self-Hosting Intelligence Threads

Deploy

Other

Anonymous Telemetry

Docs Custom Look and FeelReasoning Messages

Reasoning Messages

Customize how reasoning (thinking) tokens from models like o1, o3, and o4-mini are displayed.

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Default Behavior Customizing the Reasoning Message Custom Header Custom Content Fully Custom Reasoning Message Render-Prop Children

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