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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:

Commercial Platform:

  • LangSmith - platform for building and monitoring production-grade LLM applications

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

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    Python 4,606 MIT 677 19 24 Updated Oct 25, 2025
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    Build resilient language agents as graphs.

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    langchain-ai/langchain-academy’s past year of commit activity
    Jupyter Notebook 2,147 1,438 25 16 Updated Oct 24, 2025
  • helm Public

    Repository hosting Langchain helm charts.

    langchain-ai/helm’s past year of commit activity
    Shell 68 Apache-2.0 28 2 0 Updated Oct 25, 2025
  • docs Public

    🦜🔗 Docs for LangChain projects

    langchain-ai/docs’s past year of commit activity
    MDX 46 MIT 300 71 29 Updated Oct 24, 2025
  • open-agent-platform Public

    An open-source, no-code agent building platform.

    langchain-ai/open-agent-platform’s past year of commit activity
    TypeScript 1,692 MIT 353 50 18 Updated Oct 25, 2025
  • langchain-azure Public

    Build secure LangChain applications on Azure

    langchain-ai/langchain-azure’s past year of commit activity
    Python 97 MIT 39 10 5 Updated Oct 24, 2025
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    langchain-ai/langchain’s past year of commit activity
    Python 118,029 MIT 19,429 164 (49 issues need help) 94 Updated Oct 24, 2025
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    Framework to build resilient language agents as graphs.

    langchain-ai/langgraphjs’s past year of commit activity
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