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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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  • docs Public

    🦜🔗 Docs for LangChain projects

    langchain-ai/docs’s past year of commit activity
    MDX 43 MIT 250 65 36 Updated Oct 22, 2025
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    DataStax Astra DB integration with LangChain

    langchain-ai/langchain-datastax’s past year of commit activity
    Python 33 MIT 12 13 0 Updated Oct 22, 2025
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    langchain-ai/deepagents’s past year of commit activity
    Python 4,505 MIT 657 18 18 Updated Oct 22, 2025
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    langchain-ai/langchain-unstructured’s past year of commit activity
    Python 9 MIT 7 7 3 Updated Oct 22, 2025
  • langchain Public

    🦜🔗 Build context-aware reasoning applications

    langchain-ai/langchain’s past year of commit activity
    Python 117,775 MIT 19,392 158 (49 issues need help) 87 Updated Oct 22, 2025
  • langchain-snowflake Public
    langchain-ai/langchain-snowflake’s past year of commit activity
    Python 10 MIT 11 4 1 Updated Oct 22, 2025
  • langchain-sema4 Public
    langchain-ai/langchain-sema4’s past year of commit activity
    Python 5 MIT 2 1 0 Updated Oct 22, 2025
  • langchain-pinecone Public

    Build LangChain applications with Pinecone

    langchain-ai/langchain-pinecone’s past year of commit activity
    Python 20 MIT 14 8 4 Updated Oct 22, 2025
  • langchain-elastic Public

    Elasticsearch integration into LangChain

    langchain-ai/langchain-elastic’s past year of commit activity
    Python 64 MIT 24 12 6 Updated Oct 22, 2025
  • langchain-ibm Public
    langchain-ai/langchain-ibm’s past year of commit activity
    Python 22 MIT 20 8 4 Updated Oct 22, 2025
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