LangChain vs LangGraph

LangChain is a broader LLM app framework; LangGraph focuses specifically on agent orchestration.

Which to pick

What it is: LangChain:LangChain is an open platform for building, testing, deploying, monitoring, and governing LLM agents.; LangGraph:LangGraph is an open-source framework for building stateful, controllable AI agents with memory, streaming, and human-in-the-loop support.
Best for: LangChain:End-to-end agent engineering platform; LangGraph:Customizable stateful agent orchestration
Who it’s for: LangChain:Developers and teams building AI agents and LLM-powered applications.; LangGraph:Developers building complex, production-grade AI agents
Pricing: LangChain:Freemium; LangGraph:Open source
Plans: LangChain:Developer $0 per seat per month · Plus $39 per seat per month; LangGraph:—
Open source: LangChain:Yes, 147,359 GitHub stars; LangGraph:Yes, 42,570 GitHub stars

Build agents fast. Start with proven patterns, customize harness, context, memory and model choice.
Trace-based testing. Debug runs with step-by-step tracing and query complex traces instantly.
Managed deployments. Deploy long-running agents with serverless or dedicated sandboxes and 30+ endpoints.
Production monitoring. Online evals, dashboards and alerts track quality, cost, latency and errors.
Feedback loop engine. Automatically detect issues, diagnose root causes and feed fixes back into evals.
Governance controls. Enforce cost limits, data redaction and human approval via LLM Gateway.

Human-in-the-loop controls. Add moderation and approval steps to keep agents on track.
Expressive workflow primitives. Create single, multi-agent, or hierarchical flows with low-level building blocks.
Persistent memory stores. Maintain conversation history and context across sessions.
Token-by-token streaming. Stream agent reasoning and actions in real time for better UX.
Model-agnostic runtime. Run agents with any LLM provider using high-level or fine-grained APIs.
Open-source MIT license. Free to use and modify without licensing fees.

Is LangChain or LangGraph free?+

LangChain has a free plan (Developer); paid plans start at $39/month per user (Plus). LangGraph is free and open source.

Which is cheaper, LangChain or LangGraph?+

LangGraph is free, so it costs less. LangChain starts at $39/month per user (Plus).

Is LangChain or LangGraph open source?+

Yes, both are open source: LangChain (langchain-ai/langchain on GitHub, MIT license) and LangGraph (langchain-ai/langgraph on GitHub, MIT license).

LangChain

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LangGraph

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Based on each tool's website and DevHunt data. Details may change; check the official sites.