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AI Agent Frameworks & Orchestration · Head to head

LangChain vs LangGraph

Both products compete in AI Agent Frameworks & Orchestration. AI agent frameworks and orchestration software provides the scaffolding for building, running, and coordinating autonomous AI agents — handling tool-calling, state management, multi-agent communication, memory routing, and execution flow across complex workflows. Here are the facts the B4 Index maintains on each, side by side.

The two files, side by side

LangChain
LangGraph
What it is
Open-source framework for building LLM applications with chains, agents, and retrieval
Graph-based framework for stateful multi-step and multi-agent LLM workflows
Website
langchain.com ↗
langchain.com/langgraph ↗
Pricing
Open-source (MIT). LangSmith $39/seat/month for observability.
Open source; LangSmith monitoring from $39/mo
Categories served
AI Agent Frameworks & Orchestration
AI Agent Frameworks & Orchestration
Status
Active
Active · verified June 2026
The LangChain file → The LangGraph file →

The decision underneath the comparison

Choosing between LangChain and LangGraph assumes you're buying AI Agent Frameworks & Orchestration at all. That's the prior question, and the B4 Index scores it on two axes: how much AI Agent Frameworks & Orchestration differentiates you, and how far AI has come at building it. Read the build-versus-buy considerations for AI Agent Frameworks & Orchestration before you shortlist either product.

Vendor facts are maintained independently of any B4 verdict and re-verified on a monthly liveness check. See the full methodology.