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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

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Repositories

Showing 10 of 154 repositories
  • langchain Public

    🦜🔗 Build context-aware reasoning applications

    langchain-ai/langchain’s past year of commit activity
    Jupyter Notebook 101,307 MIT 16,432 347 (4 issues need help) 55 Updated Feb 23, 2025
  • langchain-ai/langchain-google’s past year of commit activity
    Python 156 MIT 182 72 13 Updated Feb 23, 2025
  • langchain-ai/langchain-api-docs-html’s past year of commit activity
    HTML 5 MIT 3 0 0 Updated Feb 23, 2025
  • langgraphjs Public

    Framework to build resilient language agents as graphs.

    langchain-ai/langgraphjs’s past year of commit activity
    TypeScript 1,018 MIT 143 76 (1 issue needs help) 9 Updated Feb 23, 2025
  • langchain-datastax Public

    DataStax Astra DB integration with LangChain

    langchain-ai/langchain-datastax’s past year of commit activity
    Python 19 MIT 9 14 1 Updated Feb 22, 2025
  • langsmith-docs Public

    Documentation for langsmith

    langchain-ai/langsmith-docs’s past year of commit activity
    MDX 100 MIT 50 35 16 Updated Feb 22, 2025
  • helm Public

    Repository hosting Langchain helm charts.

    langchain-ai/helm’s past year of commit activity
    Shell 44 Apache-2.0 13 3 1 Updated Feb 22, 2025
  • langgraph Public

    Build resilient language agents as graphs.

    langchain-ai/langgraph’s past year of commit activity
    Python 9,310 MIT 1,538 61 43 Updated Feb 22, 2025
  • langchain-ai/langchain-upstage’s past year of commit activity
    Python 11 MIT 4 1 1 Updated Feb 22, 2025
  • langchain-ai/langchain-together’s past year of commit activity
    Python 4 MIT 2 0 2 Updated Feb 22, 2025