LangChain

Top repositories by stars

• langchain-ai/langchain(on leaderboard)

  🦜🔗 The platform for reliable agents.

  Python126,852
• langchain-ai/langgraph(on leaderboard)

  Build resilient language agents as graphs.

  Python24,812
• langchain-ai/langchainjs

  🦜🔗 Build context-aware reasoning applications

  TypeScript17,002
• langchain-ai/open_deep_research

  Python10,552
• langchain-ai/deepagents

  Deep Agents is an agent harness built on langchain and langgraph. Deep Agents are equipped with a planning tool, a filesystem backend, and the ability to spawn subagents - making them well-equipped to handle complex agentic tasks.

  Python9,379
• langchain-ai/local-deep-researcher

  Fully local web research and report writing assistant

  Python8,500
• langchain-ai/rag-from-scratch

  Jupyter Notebook7,363
• langchain-ai/opengpts

  Rich Text Format6,752
• langchain-ai/chat-langchain

  Python6,237
• langchain-ai/open-canvas

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

  TypeScript5,359
• langchain-ai/open-swe

  An Open-Source Asynchronous Coding Agent

  TypeScript5,253
• langchain-ai/langchain-mcp-adapters

  LangChain 🔌 MCP

  Python3,360
• langchain-ai/langgraphjs

  Framework to build resilient language agents as graphs.

  TypeScript2,548
• langchain-ai/agent-chat-ui

  🦜💬 Web app for interacting with any LangGraph agent (PY & TS) via a chat interface.

  TypeScript2,472
• langchain-ai/langchain-academy

  Jupyter Notebook2,430
• langchain-ai/langchain-nextjs-template

  LangChain + Next.js starter template

  TypeScript2,379
• langchain-ai/langserve

  LangServe 🦜️🏓

  JavaScript2,269
• langchain-ai/social-media-agent

  📲 An agent for sourcing, curating, and scheduling social media posts with human-in-the-loop.

  TypeScript2,264
• langchain-ai/executive-ai-assistant

  Python2,166
• langchain-ai/open-agent-platform

  An open-source, no-code agent building platform.

  TypeScript1,841
• langchain-ai/streamlit-agent

  Reference implementations of several LangChain agents as Streamlit apps

  Python1,629
• langchain-ai/agents-from-scratch

  Build an email assistant with human-in-the-loop and memory

  Jupyter Notebook1,498
• langchain-ai/langgraph-supervisor-py

  Python1,491
• langchain-ai/deep-agents-ui

  Custom UI for Deep Agents

  TypeScript1,394
• langchain-ai/langgraph-swarm-py

  For your multi-agent needs

  Python1,385
• langchain-ai/langmem

  Python1,293
• langchain-ai/openwork

  TypeScript1,289
• langchain-ai/langchain-extract

  🦜⛏️ Did you say you like data?

  Rich Text Format1,186
• langchain-ai/langsmith-cookbook

  Jupyter Notebook1,007
• langchain-ai/mcpdoc

  Expose llms-txt to IDEs for development

  Python929
• langchain-ai/agent-inbox

  📥 An inbox UX for interacting with human-in-the-loop agents.

  TypeScript921
• langchain-ai/openevals

  Readymade evaluators for your LLM apps

  Python902
• langchain-ai/langsmith-sdk

  LangSmith Client SDK Implementations

  Python780
• langchain-ai/auto-evaluator

  TypeScript779
• langchain-ai/langgraph-codeact

  Python716
• langchain-ai/deepagentsjs

  Deep Agents in JS

  TypeScript699
• langchain-ai/deep_research_from_scratch

  Jupyter Notebook674
• langchain-ai/react-agent

  LangGraph template for a simple ReAct agent

  Python660
• langchain-ai/multi-modal-researcher

  Python585
• langchain-ai/deep-agents-from-scratch

  Jupyter Notebook579
• langchain-ai/weblangchain

  LangChain-powered web researcher chatbot. Searches for sources on the web and cites them in generated answers.

  TypeScript553
• langchain-ai/agent-protocol

  Python522
• langchain-ai/how_to_fix_your_context

  Jupyter Notebook516
• langchain-ai/langgraph-bigtool

  Build LangGraph agents with large numbers of tools

  Python514
• langchain-ai/langchain-aiplugin

  Python506
• langchain-ai/agentevals

  Readymade evaluators for agent trajectories

  Python477
• langchain-ai/langgraph-example

  Python474
• langchain-ai/deepagents-quickstarts

  REPO MOVED

  Jupyter Notebook468
• langchain-ai/react-voice-agent

  HTML431
• langchain-ai/memory-agent

  Python411
• langchain-ai/web-explorer

  Python389
• langchain-ai/langgraphjs-gen-ui-examples

  A collection of generative UI agents written with LangGraph.js

  TypeScript386
• langchain-ai/langchain-google

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

  Python340
• langchain-ai/langconnect

  A managed RAG API server.

  Python336
• langchain-ai/langgraph-101

  Learn about the fundamentals of LangGraph through a series of notebooks

  Jupyter Notebook316
• langchain-ai/langchain-aws

  Build LangChain Applications on AWS

  Python296
• langchain-ai/rag-research-agent-template

  Python290
• langchain-ai/lca-lc-foundations

  TypeScript287
• langchain-ai/learning-langchain

  Python275
• langchain-ai/langchain-teacher

  Teach LangChain using LangChain!

  Python272
• langchain-ai/text-split-explorer

  Python269
• langchain-ai/langchain-postgres

  LangChain abstractions backed by Postgres Backend

  Python265
• langchain-ai/langchain-benchmarks

  🦜💯 Flex those feathers!

  Python255
• langchain-ai/langchainjs-mcp-adapters

  ** THIS REPO HAS MOVED TO https://github.com/langchain-ai/langchainjs/tree/main/libs/langchain-mcp-adapters ** Adapters for integrating Model Context Protocol (MCP) tools with LangChain.js applications, supporting both stdio and SSE transports.

  TypeScript246
• langchain-ai/docs

  🦜🔗 Docs for LangChain projects

  MDX243
• langchain-ai/langchain-sandbox

  Safely run untrusted Python code using Pyodide and Deno

  Python234
• langchain-ai/langgraph-builder

  TypeScript232
• langchain-ai/new-langgraph-project

  Python229
• langchain-ai/memory-template

  Python224
• langchain-ai/langchain-community

  Community-maintained LangChain integrations

  Python220
• langchain-ai/data-enrichment

  LangGraph Studio template for creating an agent that does web research to genearte or enrich structured data.

  Jupyter Notebook218
• langchain-ai/company-researcher

  Python212
• langchain-ai/llmanager

  🧍‍♂️LLM as a manager for approval processes.

  TypeScript211
• langchain-ai/langgraph-cua-py

  An implementation of a computer use agent (CUA) using LangGraph

  Python198
• langchain-ai/agent-auth-payments

  fullstack chat agent with authentication, request credits and payments built in

  TypeScript189
• langchain-ai/langchain-nvidia

  Jupyter Notebook186
• langchain-ai/create-agent-chat-app

  The quickest way to get started building a LangGraph app

  TypeScript175
• langchain-ai/langgraph-reflection

  Python171
• langchain-ai/context_engineering

  Jupyter Notebook166
• langchain-ai/task_mAIstro

  Jupyter Notebook164
• langchain-ai/langsmith-docs

  This repo is deprecated. Please go to langchain-ai/docs.

  JavaScript163
• langchain-ai/people-researcher

  Python154
• langchain-ai/lang-memgpt

  A bot with memory, built on LangGraph Cloud.

  Python151
• langchain-ai/story-writing

  Python151
• langchain-ai/retrieval-agent-template

  Python150
• langchain-ai/robo-blogger

  Assistant for voice-to-blog writing

  Python147
• langchain-ai/intro-to-langsmith

  Resources for the LangSmith Academy Course

  Jupyter Notebook146
• langchain-ai/langgraph-fullstack-python

  Python143
• langchain-ai/langsmith-fetch

  CLI for fetching LangSmith data

  Python113
• langchain-ai/langchain-azure

  Build secure LangChain applications on Azure

  Python113
• langchain-ai/voice-sandwich-demo

  TypeScript110
• langchain-ai/langgraph-gen-py

  CLI to generate LangGraph stubs from a specification

  Python104
• langchain-ai/react-agent-js

  TypeScript104
• langchain-ai/langchain-mongodb

  Integrations between MongoDB, Atlas, LangChain, and LangGraph

  Python99
• langchain-ai/langchain-experimental

  Python97
• langchain-ai/kork

  Natural Language Interfaces Powered by LLMs

  Python95
• langchain-ai/reply_gAI

  An AI Clone For Any X Profile

  Jupyter Notebook93
• langchain-ai/langsmith-mcp-server

  Python84
• langchain-ai/helm

  Repository hosting Langchain helm charts.

  Shell82
• langchain-ai/langchain-elastic

  Elasticsearch integration into LangChain

  Python75