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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 220 repositories
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    TypeScript 1,630 MIT 341 50 17 Updated Sep 25, 2025
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    Python 19,083 MIT 3,350 126 (13 issues need help) 29 Updated Sep 25, 2025
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    Jupyter Notebook 116,163 MIT 19,097 141 (49 issues need help) 98 Updated Sep 25, 2025
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    langchain-ai/langsmith-sdk’s past year of commit activity
    Python 645 MIT 155 84 17 Updated Sep 25, 2025
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    langchain-ai/docs’s past year of commit activity
    MDX 11 28 59 18 Updated Sep 25, 2025
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    langchain-ai/langchain-saq’s past year of commit activity
    Python 1 MIT 58 0 0 Updated Sep 25, 2025
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    langchain-ai/langchain-nvidia’s past year of commit activity
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    Python 2,839 MIT 276 35 10 Updated Sep 24, 2025
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