← Back to all tools
LangChain & LangGraph logo

LangChain & LangGraph

✓ Verified

Build production-grade AI agents

Updated Nov 23, 2025
AI Framework/LibraryOpen Source

About

LangChain is the fastest way to build an AI agent. LangGraph is a lower level framework and runtime, useful for highly custom and controllable agents, designed to support production-grade, long running agents.

Key Features

  • Standard tool calling architecture
  • Provider agnostic design
  • Middleware for customization
  • create_agent abstraction
  • Durable state
  • Built-in persistence
  • Human-in-the-loop patterns
  • Graph-based execution model

Use Cases

    Technical Details

    Languages

    PythonJavaScript

    Frequently Asked Questions

    What is LangChain & LangGraph?

    LangChain is the fastest way to build an AI agent. LangGraph is a lower level framework and runtime, useful for highly custom and controllable agents, designed to support production-grade, long running agents.

    Is LangChain & LangGraph free?

    Yes, LangChain & LangGraph is open source and free to use.

    What programming languages does LangChain & LangGraph support?

    LangChain & LangGraph supports 2+ programming languages including Python, JavaScript.

    What can LangChain & LangGraph do?

    LangChain & LangGraph provides agentic/autonomous mode. Key features include: Standard tool calling architecture, Provider agnostic design, Middleware for customization.

    Pricing

    Company

    Name
    LangChain
    Founded
    2022
    Location
    San Francisco, CA

    Links