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@langchain-ai

LangChain

README.md

The agent engineering platform.

Core OSS libraries:

Commercial Platform:

  • LangSmith – platform for building and monitoring production-grade LLM applications

OSS extensions and apps:

  • Deep Agents Code - dcode is an open-source coding agent in your terminal, similar to Claude Code or Cursor, powered by any LLM
  • Open SWE – open-source asynchronous coding agent
  • OpenWiki - CLI agent for codebase and personal memory wiki generation & maintenance.
  • 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 265 repositories
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    An Open-Source Cloud Software Factory

    langchain-ai/open-swe's past year of commit activity
    Python 10,995 MIT 1,303 0 128 Updated Oct 11, 2026
  • docs Public

    Unified LangChain documentation.

    langchain-ai/docs's past year of commit activity
    MDX 428 MIT 2,739 254 154 Updated Oct 11, 2026
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    LangSmith Client SDK Implementations

    langchain-ai/langsmith-sdk's past year of commit activity
    Python 1,074 MIT 312 123 128 Updated Oct 11, 2026
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    Build resilient agents.

    langchain-ai/langgraph's past year of commit activity
    Python 43,076 MIT 7,322 574 (11 issues need help) 228 Updated Oct 11, 2026
  • deepagents Public

    The batteries-included agent harness.

    langchain-ai/deepagents's past year of commit activity
    Python 30,134 MIT 4,222 158 49 Updated Oct 11, 2026
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    langchain-ai/chat-langchain's past year of commit activity
    TypeScript 6,461 MIT 1,493 2 485 Updated Oct 11, 2026
  • local-deep-researcher Public

    Fully local web research and report writing assistant

    langchain-ai/local-deep-researcher's past year of commit activity
    Python 9,365 MIT 977 38 8 Updated Oct 11, 2026
  • langchain-google Public

    🦜🔗 LangChain interfaces to Google's suite of AI products (e.g. Gemini & Vertex AI)

    langchain-ai/langchain-google's past year of commit activity
    Python 404 MIT 497 90 (10 issues need help) 118 Updated Oct 11, 2026
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    Framework to build resilient language agents as graphs.

    langchain-ai/langgraphjs's past year of commit activity
    TypeScript 3,347 MIT 606 108 94 Updated Oct 11, 2026
  • langsmith-cli Public

    A coding agent-first CLI for interacting with LangSmith.

    langchain-ai/langsmith-cli's past year of commit activity
    Go 78 MIT 20 9 59 Updated Oct 11, 2026
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