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LangChain

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langchain logo

LangChain is an open source orchestration framework designed to help developers build context-aware, reasoning applications powered by large language models (LLMs). It provides modular abstractions for document loaders, vector stores, prompt templates, and autonomous agent workflows.

Here are 29,739 public repositories matching this topic...

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microsoft / markitdown

Star 195k

Python tool for converting files and office documents to Markdown.

markdown pdf openai microsoft-office autogen langchain autogen-extension
  • Updated Nov 7, 2026
  • Python
langchain

langchain-ai / langchain

Star 149k

The agent engineering platform.

python open-source enterprise framework typescript ai gemini openai multiagent agents ai-agents rag pydantic llm generative-ai chatgpt langchain anthropic langgraph deepagents
  • Updated Nov 12, 2026
  • Python

bytedance / deer-flow

Star 85.3k

An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

nodejs python agent typescript ai podcast multi-agent superagent harness ai-agents llm langchain agentic langgraph agentic-framework agentic-workflow deep-research langmanus
  • Updated Nov 12, 2026
  • Python

headroomlabs-ai / headroom

Star 79.4k

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

python agent typescript compression ai proxy mcp tokens openai cursor rag fastapi llm prompt-engineering langchain anthropic context-window claude-code token-optimization context-engineering
  • Updated Nov 12, 2026
  • Python

BerriAI / litellm

Sponsor
Star 63.2k

The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]

rust gateway bedrock openai vertex-ai azure-openai llm langchain llmops anthropic openai-proxy litellm ai-gateway rust-ai llm-gateway mcp-gateway
  • Updated Nov 12, 2026
  • Python
Flowise

FlowiseAI / Flowise

Sponsor
Star 55.6k

Build AI Agents, Visually

react javascript typescript chatbot artificial-intelligence openai multiagent-systems agents workflow-automation low-code no-code rag large-language-models chatgpt langchain agentic-workflow agentic-ai
  • Updated Aug 13, 2026
  • TypeScript
langgraph

langchain-ai / langgraph

Star 44.8k

Build resilient agents.

python open-source enterprise framework ai gemini openai multiagent agents ai-agents rag pydantic llm generative-ai chatgpt langchain langgraph deepagents
  • Updated Nov 12, 2026
  • Python

chatchat-space / Langchain-Chatchat

Star 38.7k

Langchain-Chatchat(原Langchain-ChatGLM)基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Llama) RAG and Agent app with langchain

chatbot llama gpt knowledge-base embedding faiss rag milvus streamlit llm chatgpt langchain chatglm fastchat retrieval-augmented-generation ollama qwen langchain-chatglm chatchat xinference
  • Updated Nov 10, 2025
  • Python
langfuse

langfuse / langfuse

Star 37.3k

🪢 Open source AI engineering platform: AI Gateway, agent observability, evals, and prompt/skill management, built on OpenTelemetry. One open platform for every AI call and every agent. Self-host or use Langfuse Cloud.

open-source playground monitoring analytics gateway evaluation self-hosted openai observability large-language-models llm prompt-engineering langchain llmops llama-index prompt-management llm-evaluation ai-gateway llm-observability llm-gateway
  • Updated Nov 12, 2026
  • TypeScript
AgentGPT

reworkd / AgentGPT

Star 36.3k

🤖 Assemble, configure, and deploy autonomous AI Agents in your browser.

agent ai agi openai gpt next agents ai-agents t3 llm t3-stack langchain autogpt baby-agi agentgpt
  • Updated Apr 29, 2025
  • TypeScript

huggingface / agents-course

Star 34.8k

This repository contains the Hugging Face Agents Course.

course agents huggingface langchain llamaindex agentic-ai smolagents
  • Updated Nov 10, 2026
  • MDX
deepagents

langchain-ai / deepagents

Star 31.2k

The batteries-included agent harness.

python typescript ai harness langchain langgraph deepagents harness-engineering
  • Updated Nov 12, 2026
  • Python

NirDiamant / RAG_Techniques

Sponsor
Star 30.3k

This repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. Each technique has a detailed notebook tutorial.

python nlp machine-learning ai tutorials embeddings openai gpt semantic-search rag vector-database llm llms generative-ai langchain llama-index retrieval-augmented-generation agentic-rag
  • Updated Nov 2, 2026
  • Jupyter Notebook
mlflow

mlflow / mlflow

Star 28.8k

The open source AI engineering platform for agents, LLMs, and ML models. MLflow enables teams of all sizes to debug, evaluate, monitor, and optimize production-quality AI applications while controlling costs and managing access to models and data.

open-source machine-learning ai apache-spark evaluation ml openai agents observability model-management mlops mlflow agentops prompt-engineering ai-governance langchain llmops llm-evaluation
  • Updated Nov 12, 2026
  • Python

NirDiamant / GenAI_Agents

Sponsor
Star 24.9k

50+ tutorials and implementations for Generative AI Agent techniques, from basic conversational bots to complex multi-agent systems.

python machine-learning ai mcp tutorials multi-agent openai agents multi-agent-systems autonomous-agents ai-agents rag llm llms generative-ai langchain genai langgraph agentic-ai
  • Updated Nov 2, 2026
  • Jupyter Notebook

comet-ml / opik

Star 23.4k

Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

open-source playground evaluation openai hacktoberfest llm prompt-engineering hacktoberfest2025 langchain llmops llama-index llm-evaluation llm-observability
  • Updated Nov 12, 2026
  • Python

1Panel-dev / MaxKB

Star 23.2k

🔥 MaxKB is an open-source platform for building enterprise-grade agents. 强大易用的开源企业级智能体平台。

agent chatbot knowledgebase rag llm langchain pgvector ollama maxkb llama3 agentic-ai mcp-server deepseek-r1 qwen3
  • Updated Nov 12, 2026
  • Python

meta-llama / llama-cookbook

Star 18.6k

Welcome to the Llama Cookbook! This is your go to guide for Building with Llama: Getting started with Inference, Fine-Tuning, RAG. We also show you how to solve end to end problems using Llama model family and using them on various provider services

python machine-learning ai pytorch llama finetuning llm langchain vllm llama2
  • Updated May 19, 2026
  • Jupyter Notebook

GoogleCloudPlatform / generative-ai

Star 17.9k

Sample code and notebooks for Generative AI on Google Cloud, with Gemini platform

google gcp google-cloud gemini agents gemini-api vertex-ai vertexai large-language-models llm generative-ai langchain gen-ai google-gemini vertex-ai-gemini-api gemini-platform
  • Updated Nov 12, 2026
  • Jupyter Notebook

mayooear / ai-pdf-chatbot-langchain

Star 16.6k

AI PDF chatbot agent built with LangChain & LangGraph

pdf typescript ai nextjs chatbot openai agents langchain langgraph
  • Updated Mar 27, 2026
  • TypeScript

Created by hwchase17

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Repository
langchain-ai/langchain
Website
github.com/topics/langchain
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