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

Core OSS libraries:

Products:

  • LangSmith - platform for building and monitoring production-grade LLM applications
  • LangGraph Platform - infrastructure for deploying LangGraph agents

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)

Learn more

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Repositories

Showing 10 of 142 repositories
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    Python 44 MIT 17 9 (2 issues need help) 2 Updated Jan 27, 2025
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    langchain-ai/agent-inbox-langgraphjs-example’s past year of commit activity
    JavaScript 0 MIT 0 0 0 Updated Jan 26, 2025
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    langchain-ai/agent-inbox-langgraph-example’s past year of commit activity
    Python 1 MIT 0 0 0 Updated Jan 26, 2025
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    langchain-ai/ollama-deep-researcher’s past year of commit activity
    Python 1,111 154 3 0 Updated Jan 26, 2025
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    Build resilient language agents as graphs.

    langchain-ai/langgraph’s past year of commit activity
    Python 8,409 MIT 1,359 59 33 Updated Jan 26, 2025
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