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@langchain-ai

LangChain

README.md

Build context-aware reasoning applications with LangChain’s flexible abstractions and AI-first toolkits.

Core OSS libraries:

Products:

OSS extensions and apps:

  • ChatLangChain and ChatLangChain.js - chatbot for answering questions about LangChain's open source libraries
  • Open Canvas - document & chat-based UX for writing code or markdown. Inspired by OpenAI's Canvas (TypeScript)
  • OpenGPTs - open source version of OpenAI's GPTs API (Python)
  • Email assistant - AI assistant that helps you maintain your emails (Python)
  • LangChain + Next.js template - template LangChain.js + Next.js application
  • Social media agent - agent for sourcing, curating, and scheduling social media posts with human-in-the-loop (TypeScript)
  • Agent Protocol - our attempt at codifying the framework-agnostic APIs that are needed to serve LLM agents in production

Learn more

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Repositories

Showing 10 of 223 repositories
  • docs Public

    🦜🔗 Docs for LangChain projects

    langchain-ai/docs’s past year of commit activity
    MDX 30 MIT 118 60 30 Updated Oct 15, 2025
  • langchainjs Public

    🦜🔗 Build context-aware reasoning applications 🦜🔗

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    TypeScript 15,852 MIT 2,793 118 (6 issues need help) 63 Updated Oct 15, 2025
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    Build resilient language agents as graphs.

    langchain-ai/langgraph’s past year of commit activity
    Python 19,795 MIT 3,481 132 (13 issues need help) 39 Updated Oct 15, 2025
  • langsmith-sdk Public

    LangSmith Client SDK Implementations

    langchain-ai/langsmith-sdk’s past year of commit activity
    Python 658 MIT 160 84 22 Updated Oct 15, 2025
  • langchain Public

    🦜🔗 Build context-aware reasoning applications

    langchain-ai/langchain’s past year of commit activity
    Python 117,263 MIT 19,301 156 (49 issues need help) 109 Updated Oct 15, 2025
  • langgraphjs Public

    Framework to build resilient language agents as graphs.

    langchain-ai/langgraphjs’s past year of commit activity
    TypeScript 2,172 MIT 331 54 18 Updated Oct 15, 2025
  • langchain-datastax Public

    DataStax Astra DB integration with LangChain

    langchain-ai/langchain-datastax’s past year of commit activity
    Python 33 MIT 12 13 1 Updated Oct 14, 2025
  • helm Public

    Repository hosting Langchain helm charts.

    langchain-ai/helm’s past year of commit activity
    Shell 67 Apache-2.0 28 3 0 Updated Oct 14, 2025
  • langchain-azure Public

    Build secure LangChain applications on Azure

    langchain-ai/langchain-azure’s past year of commit activity
    Python 92 MIT 38 10 5 Updated Oct 14, 2025
  • langchain-extract Public

    🦜⛏️ Did you say you like data?

    langchain-ai/langchain-extract’s past year of commit activity
    Rich Text Format 1,167 MIT 121 22 3 Updated Oct 14, 2025
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