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Build context-aware, reasoning applications with LangChain’s flexible abstractions and AI-first toolkit.

Main OSS libraries:

Products:

  • LangSmith - the platform for building production-grade LLM applications

OSS extensions:

  • LangServe - deploy LangChain runnables and chains as a REST API (Python)
  • OpenGPTs - Open-source effort to create a similar experience to OpenAI's GPTs and Assistants API (Python)

Live demos:

  • ChatLangChain - LangChain-powered chatbot focused on question answering over the LangChain documentation (Python)
  • ChatLangChain.js - ChatLangChain in JavaScript (JavaScript/TypeScript)
  • WebLangChain - LangChain-powered web research chatbot (Python)
  • Open Canvas - Document & chat based UX for writing code or markdown. (TypeScript) (Inspired by OpenAI's "Canvas")

Learn more

Section Description
Company Website LangChain product and company info
Python Documentation Get started with the Python library
JavaScript Documentation Get started with the JavaScript library

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Repositories

Showing 10 of 130 repositories
  • langchainjs Public

    🦜🔗 Build context-aware reasoning applications 🦜🔗

    langchain-ai/langchainjs’s past year of commit activity
    TypeScript 13,032 MIT 2,259 71 (1 issue needs help) 76 Updated Dec 31, 2024
  • langchain-ai/langchain-nvidia’s past year of commit activity
    Jupyter Notebook 58 MIT 22 8 8 Updated Dec 31, 2024
  • open-canvas Public

    📃 A better UX for chat, writing content, and coding with LLMs.

    langchain-ai/open-canvas’s past year of commit activity
    TypeScript 3,169 MIT 464 29 4 Updated Jan 1, 2025
  • langsmith-docs Public

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    langchain-ai/langsmith-docs’s past year of commit activity
    MDX 92 MIT 42 22 13 Updated Dec 31, 2024
  • langsmith-sdk Public

    LangSmith Client SDK Implementations

    langchain-ai/langsmith-sdk’s past year of commit activity
    Python 442 MIT 84 66 48 Updated Dec 31, 2024
  • langchain-ai/langchain-google’s past year of commit activity
    Python 133 MIT 160 51 13 Updated Dec 31, 2024
  • langchain-ai/chat-langchain’s past year of commit activity
    TypeScript 5,582 MIT 1,304 101 37 Updated Dec 31, 2024
  • langgraphjs Public

    Build resilient language agents as graphs.

    langchain-ai/langgraphjs’s past year of commit activity
    TypeScript 784 MIT 115 63 14 Updated Dec 30, 2024
  • langgraph Public

    Build resilient language agents as graphs.

    langchain-ai/langgraph’s past year of commit activity
    Python 7,638 MIT 1,214 63 31 Updated Dec 31, 2024
  • langchain Public

    🦜🔗 Build context-aware reasoning applications

    langchain-ai/langchain’s past year of commit activity
    Jupyter Notebook 97,240 MIT 15,797 392 (7 issues need help) 53 Updated Dec 30, 2024