Skip to content

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

Core OSS libraries:

Products:

  • LangSmith - platform for building and monitoring production-grade LLM applications
  • LangGraph Platform - infrastructure for deploying LangGraph agents

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 - Agent Protocol is our attempt at codifying the framework-agnostic APIs that are needed to serve LLM agents in production

Learn more

Popular repositories Loading

  1. langchain langchain Public

    🦜🔗 Build context-aware reasoning applications

    Jupyter Notebook 100k 16.3k

  2. langchainjs langchainjs Public

    🦜🔗 Build context-aware reasoning applications 🦜🔗

    TypeScript 13.5k 2.3k

  3. langgraph langgraph Public

    Build resilient language agents as graphs.

    Python 9k 1.5k

  4. opengpts opengpts Public

    Rich Text Format 6.6k 880

  5. chat-langchain chat-langchain Public

    TypeScript 5.7k 1.3k

  6. open-canvas open-canvas Public

    📃 A better UX for chat, writing content, and coding with LLMs.

    TypeScript 3.7k 522

Repositories

Showing 10 of 145 repositories
  • langchain-ibm Public
    langchain-ai/langchain-ibm’s past year of commit activity
    Python 10 MIT 12 5 2 Updated Feb 13, 2025
  • langgraph Public

    Build resilient language agents as graphs.

    langchain-ai/langgraph’s past year of commit activity
    Python 8,953 MIT 1,469 63 36 Updated Feb 13, 2025
  • langchain-aws Public

    Build LangChain Applications on AWS

    langchain-ai/langchain-aws’s past year of commit activity
    Python 129 MIT 123 61 (1 issue needs help) 34 Updated Feb 13, 2025
  • langchain Public

    🦜🔗 Build context-aware reasoning applications

    langchain-ai/langchain’s past year of commit activity
    Jupyter Notebook 100,375 MIT 16,297 347 (2 issues need help) 58 Updated Feb 13, 2025
  • open-canvas Public

    📃 A better UX for chat, writing content, and coding with LLMs.

    langchain-ai/open-canvas’s past year of commit activity
    TypeScript 3,659 MIT 522 33 2 Updated Feb 13, 2025
  • langchain-ai/open_deep_research’s past year of commit activity
    Jupyter Notebook 545 109 0 0 Updated Feb 13, 2025
  • langchain-azure Public

    Build LangChain Applications with Azure

    langchain-ai/langchain-azure’s past year of commit activity
    Python 23 MIT 17 8 5 Updated Feb 12, 2025
  • langchainjs Public

    🦜🔗 Build context-aware reasoning applications 🦜🔗

    langchain-ai/langchainjs’s past year of commit activity
    TypeScript 13,512 MIT 2,324 66 78 Updated Feb 12, 2025
  • langchain-ai/langchain-api-docs-html’s past year of commit activity
    HTML 4 MIT 3 0 0 Updated Feb 12, 2025
  • langchain-ai/langchain-google’s past year of commit activity
    Python 150 MIT 178 67 13 Updated Feb 11, 2025