React Reasoning Components

Dev Design Library indexes 18 React reasoning components from 10 open-source UI libraries, with the most coming from LocalMode, Notra, Halaska UI, AI Elements and AI CSS. Each one links to its page with the source code, a live preview where available, the library license and the install command. Every library in this list targets React. Reasoning components belong to the AI group.

• Chain Of ThoughtAI Elements · ReactA collapsible component that visualizes AI reasoning steps with support for search results, images, and step-by-step…
• Agent DisclosurebeUI · ReactShared transform-only reveal for collapsible agent content.
• Reasoning TraceSpectrum UI · ReactAn expandable chain-of-thought trace with a live thinking timer.
• Thinking StepsFluid Functionalism · ReactCollapsible AI reasoning steps with animated expand/collapse, per-step icons, sources, and nested details. Radix flavor.
• ReasoningPanel UI · React NativeThe model's working, shown while it happens and folded away after.
• Agent ThinkingBoardUI · ReactAgent thinking indicators for chat composers.
• ChatGPT ReasoningNotra · ReactThe collapsible "Worked for Ns" trace, built on shadcn Collapsible.
• Reasoning EffortAI CSS · React
• Research Agent BlockLocalMode · ReactA tool-using ReAct research agent over its OWN on-device WebGPU-only WebLLM model (default Qwen3-1.7B-q4f16_1-MLC)…
• Thinking StepsHalaska UI · React
• ReasoningAI Elements · ReactA collapsible component that displays AI reasoning content, automatically opening during streaming and closing when…
• Thinking StepsFluid Functionalism · ReactCollapsible AI reasoning steps with animated expand/collapse, per-step icons, sources, and nested details. Base UI…
• Codex ReasoningNotra · ReactThe dim italic summary Codex shows while it reasons.
• Thinking ReasoningAI CSS · React
• Chain of ThoughtLocalMode · ReactA structured step-by-step reasoning timeline (distinct from free-text Reasoning): labeled steps with per-step status…
• Thinking Trace PatternHalaska UI · React
• Gemini ThoughtsNotra · ReactThe "Show thinking" step with thoughts and searches.
• ReasoningLocalMode · ReactThe model's own thinking tokens (DeepSeek-R1 style) in a collapsible region: auto-expands while streaming with an…

Libraries with React reasoning components

• LocalMode
• Notra
• Halaska UI
• AI Elements
• AI CSS

Related categories

• Reasoning Components
• Tailwind CSS Reasoning Components
• Animated Reasoning Components
• React AI Element Components
• React Prompt Input Components
• React AI Orb Components
• React Conversation Components
• React Attachment Components
• React Thinking Indicator Components
• React Model Selector Components
• React Voice Input Components
• React Sources Components
• React Tool Call Components
• React Streaming Text Components
• React Citation Components
• React AI Message Components
• React Suggestions Components
• React Task Queue Components
• React Agent Plan Components