1. Project Overview

 SearChat

AI large language model-based dialogue search engine

Multi-model, search engine integration | Real-time dialogue search | Supports Deep Research deep research

2. Open Source License

Licensed under MIT

3. Screenshots

4. Feature Overview

SearChat is an AI large language model-based dialogue search engine that supports multi-model, search engine integration, real-time dialogue search, and supports Deep Research deep research.

SearChat is a dialogue search engine based on modern AI large language models.

Core features：

• Multi-model support
   - Supports OpenAI, Anthropic, Gemini compatible APIs
• Multi-search engine
   - Supports Bing, Google, SearXNG, etc. multiple search sources
• Dialogue search
   - Supports multi-turn chat-style search
• Dialogue history records - Historical conversation records are cached in the browser (based on IndexedDB/LocalStorage)
• Deep Research mode
   - Reconstruct deep research functionality
• MCP support
   - (TODO) Support access to external MCP services
• ️ Image search - (TODO) Support image or video search
• File parsing
   - (TODO) Support uploading documents and extracting content

✨ Core functions

 Deep Research deep research

• Intelligent research mode
   - Deep research functionality
• Iterative exploration
   - Based on LangChain + LangGraph workflow orchestration
• Comprehensive report generation
   - Automatically generate structured research reports

 AI model support

Important

To achieve the best results, the modelmust support Tool Call (Function Calling)。

• OpenAI API compatible
• Google Gemini API compatible
• Anthropic API compatible
• Google Vertex AI compatible

 Multi-search engine integration

• SearXNG
   - Open-source aggregated search, no API key required
• Bing Search
   - Official Microsoft search API
• Google Search
   - Support multiple API access methods
• Tavily
   - Search engine optimized for LLM
• Exa
   - Exa.ai network search API
• Bocha
   - BochaAI network search API
• ChatGLM Web Search
   - Zhi Pian AI free search plugin

 Modernized Interface Experience

• Responsive Design
   - Perfectly adapted to desktop and mobile ends
• Dark/ Light Theme
   - Supports automatic switching of system themes
• Internationalization Support
   - Multi-language interface (i18n)
• Real-time Stream Output
   - Typewriter effect display of answers
• Contextual Dialogue
   - Supports multi-turn dialogue and history records

 Deep Research Deep Research Mode

Deep Research Mode uses AI-driven iterative search and analysis to generate comprehensive and in-depth research reports on any topic.

Core Features:

• Iterative Research
   - Automatically identifies knowledge gaps and executes subsequent searches
• Structured Report
   - Generates referenced structured research reports
• Reference Support
   - Includes configurable source references (e.g. [[citation:1]] or clickable URLs)
• Multi-Engine Search
   - Utilizes multiple search engines to obtain comprehensive results

5. Tech Stack

Development Tools

Backend Technology Stack

• Framework
  Koa.js + TypeScript
• AI Integration
  LangChain + LangGraph
• Search Engine
  Multi-engine Adapter Mode

Frontend Technology Stack

• Framework
  Vue 3 + Composition API
• Build
  Vite + TypeScript
• UI Library
  TDesign Vue Next
• State management
  Pinia + Persistent
• Styles
  Tailwind CSS + Less