langgraph

Build resilient language agents as graphs.

28.0k
Stars
+2550
Stars/month
10
Releases (6m)

Star Growth

+446 (1.6%)
27.1k27.9k28.7kMar 27Apr 1

Overview

LangGraph is a low-level orchestration framework designed for building, managing, and deploying long-running, stateful agents. Unlike simple chatbots, LangGraph enables the creation of sophisticated AI systems that can persist through failures, maintain complex state across sessions, and operate autonomously over extended periods. The framework treats agents as graphs, providing a structured approach to defining multi-step workflows with branching logic and decision points. Key capabilities include durable execution that automatically resumes from failure points, comprehensive memory management with both short-term working memory and long-term persistent storage, and seamless human-in-the-loop integration for oversight and intervention. LangGraph is trusted by major companies including Klarna, Replit, and Elastic for production agent deployments. The framework integrates with LangSmith for debugging and visualization, offering deep insights into agent behavior through execution tracing and state transition monitoring. With over 27,000 GitHub stars, LangGraph represents a mature approach to agent orchestration that goes beyond simple prompt-response patterns to enable truly autonomous, resilient AI systems capable of handling complex, multi-step tasks in production environments.

Deep Analysis

Key Differentiator

Unlike CrewAI (high-level role-based crews), LangGraph provides low-level graph-based orchestration with durable execution and memory — trusted by Klarna, Replit, and Elastic for production stateful agents

Capabilities

  • Durable execution with automatic persistence and recovery from failures
  • Human-in-the-loop with state inspection and modification at any execution point
  • Short-term working memory and long-term persistent memory across sessions
  • Graph-based agent orchestration with branching, subgraphs, and cycles
  • Production deployment via LangSmith with visualization and tracing
  • Deep Agents for planning, subagents, and file system operations

🔗 Integrations

LangChainLangSmithOpenAIAnthropicAny LangChain-supported LLM

Best For

  • Teams building long-running stateful agents that need durable execution and human-in-the-loop
  • LangChain ecosystem users wanting production-grade agent orchestration with LangSmith observability

Not Ideal For

  • Quick prototyping of simple agents — use CrewAI for faster setup with less boilerplate
  • Non-LangChain teams wanting minimal dependencies — use AgentScope or raw function-calling

Languages

PythonJavaScriptTypeScript

Deployment

pip installnpm installLangSmith Deployment (managed)Self-hosted

Pricing Detail

Free: Open source (MIT license) for library
Paid: LangSmith hosting for production deployment

Known Limitations

  • Steep learning curve — graph-based abstractions require understanding Pregel-style computation
  • Best experience requires paid LangSmith for debugging, tracing, and deployment
  • Tightly coupled with LangChain ecosystem — harder to use standalone

Pros

  • + Durable execution ensures agents automatically resume from exactly where they left off after failures or interruptions
  • + Comprehensive memory system with both short-term working memory for ongoing reasoning and long-term persistent memory across sessions
  • + Seamless human-in-the-loop capabilities allow for inspection and modification of agent state at any point during execution

Cons

  • - Low-level framework requires more technical expertise and setup compared to high-level agent builders
  • - Graph-based agent design paradigm may have a steeper learning curve for developers new to agent orchestration
  • - Production deployment complexity may be overkill for simple chatbot or single-turn use cases

Use Cases

  • Long-running autonomous agents that need to persist through system failures and operate over days or weeks
  • Complex multi-step workflows requiring human oversight, approval, or intervention at specific decision points
  • Stateful agents that must maintain context and memory across multiple sessions and interactions

Getting Started

Install LangGraph using pip install -U langgraph, then define your agent as a graph structure with nodes representing different steps or decisions in your workflow, and finally deploy your agent to begin execution with built-in state persistence and failure recovery.

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