LangChain

Open-source framework for building LLM applications

open-sourceFree and open-source. LangSmith: Free tier, Plus $39/seat/mo, Enterprise customView full pricing →

Visit LangChain

https://langchain.com

💰 View Detailed Pricing →Try LangChain →

About LangChain

Open-source framework for building applications with large language models. LangChain provides composable tools for chains, agents, RAG, and memory management, with LangSmith for observability and LangGraph for workflows.

Key Features

✓Chain composition
✓Agent frameworks
✓RAG tooling
✓LangSmith observability
✓LangGraph workflows
✓100+ integrations

Tags

frameworkllmopen-sourceragagentsdeveloper tools

Alternatives to LangChain

View all LangChain alternatives →

Hugging Face

Open-source ML platform with 500K+ models and datasets

freemiumCompare LangChain vs Hugging Face →

Together AI

Fast inference platform for 100+ open-source AI models

paidCompare LangChain vs Together AI →

OpenAI API

API access to GPT-4, DALL-E, and OpenAI models

paidCompare LangChain vs OpenAI API →

Is LangChain down right now?

Check real-time status and outage history on API Status Check.

Check LangChain Status →