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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

Showing 10 of 224 repositories
  • deepagents Public
    langchain-ai/deepagents’s past year of commit activity
    Python 4,548 MIT 663 18 21 Updated Oct 23, 2025
  • langchain-ibm Public
    langchain-ai/langchain-ibm’s past year of commit activity
    Python 22 MIT 20 8 2 Updated Oct 23, 2025
  • docs Public

    🦜🔗 Docs for LangChain projects

    langchain-ai/docs’s past year of commit activity
    MDX 44 MIT 271 67 36 Updated Oct 23, 2025
  • deepagentsjs Public

    Deep Agents in JS

    langchain-ai/deepagentsjs’s past year of commit activity
    TypeScript 191 MIT 27 6 3 Updated Oct 23, 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 23, 2025
  • langgraphjs Public

    Framework to build resilient language agents as graphs.

    langchain-ai/langgraphjs’s past year of commit activity
    TypeScript 2,196 MIT 334 58 21 Updated Oct 23, 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 0 Updated Oct 23, 2025
  • langchain-aws Public

    Build LangChain Applications on AWS

    langchain-ai/langchain-aws’s past year of commit activity
    Python 228 MIT 209 66 (1 issue needs help) 28 Updated Oct 23, 2025
  • langchainjs Public

    🦜🔗 Build context-aware reasoning applications 🦜🔗

    langchain-ai/langchainjs’s past year of commit activity
    TypeScript 16,093 MIT 2,825 128 (6 issues need help) 66 Updated Oct 23, 2025
  • langchain-azure Public

    Build secure LangChain applications on Azure

    langchain-ai/langchain-azure’s past year of commit activity
    Python 97 MIT 39 9 5 Updated Oct 23, 2025
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