LangGraph: Agent Frameworks

Founded 2023|San Francisco, CA|51-200 people|Free open-source (LangSmith + LangGraph Platform paid)

What is LangGraph?

LangGraph is LangChain's graph-based orchestration framework for building stateful, multi-step AI agents. Unlike linear chains, LangGraph models agent workflows as directed graphs with nodes (functions or LLM calls) and edges (conditional routing), enabling cycles, branching, parallel execution, and durable state across long-running interactions.

Together, LangChain and LangGraph have 90M monthly downloads and power production applications at Uber, JPMorgan, BlackRock, and Cisco. LangGraph 1.0 (released 2026) added enterprise certifications, durable execution with checkpointing, time-travel debugging, and human-in-the-loop interrupts. LangChain 1.0 now uses LangGraph under the hood — start with the simple LangChain API and drop down to LangGraph for advanced control when needed.

LangGraph is fully MIT-licensed open-source and free. LangSmith (the observability and eval companion) and LangGraph Platform (managed deployment) are paid SaaS offerings on top. Positioned as the production-control framework for teams that need reliability, observability, and durability — the most enterprise-ready open-source agent framework in 2026.

Key features

Core capabilities this platform advertises.

Graph-based agent workflows with nodes, edges, and conditional routing
Cycles, branching, and parallel execution
Durable execution with checkpointing and time-travel debugging
Human-in-the-loop interrupts for review/approval steps
Enterprise certifications and 90M monthly downloads (with LangChain)

Strengths and tradeoffs

What this tool does well, and the limitations to keep in mind.

Pros

Most production-ready open-source agent framework in 2026
Full enterprise certifications + Fortune 500 references
Durable execution survives crashes and restarts
Time-travel debugging is unique in the space
Tight LangChain ecosystem integration

Cons

Steeper learning curve than CrewAI or simpler alternatives
Paid LangSmith / LangGraph Platform for managed observability
Heavier conceptually than minimal frameworks
Best with LangChain ecosystem — leaving means losing leverage

Plans & pricing

What's included in each plan, and how the tiers compare.

Open Source (MIT)

Forever

Full LangGraph framework
Self-hostable
Checkpointing, durable execution
Compatible with all LangChain integrations

LangSmith

$39

User/month

Hosted observability + tracing
Eval datasets and dashboards
Production debugging

LangGraph Platform

Contact sales

Contact sales for a quote

Managed LangGraph deployment
Studio UI for graph design
Enterprise SSO and SLAs

View official pricing page

Common use cases

Production engineering teams building reliable, multi-step AI agents at scale with full observability

Production multi-step AI agents at Fortune 500 scale
Long-running workflows with durable state across hours/days
Human-in-the-loop approval workflows
Branching agent decision trees with rollback
Cross-tool orchestration with full observability

Using LangGraph with Respan

LangGraph and Respan complement each other for agent orchestration and observability. Build complex agent workflows with LangGraph, then monitor their performance with Respan's framework-agnostic tracking.

Monitor LangGraph agent executions across different model providers in unified Respan dashboard
Track node execution costs and optimize LangGraph workflows based on Respan analytics
Debug complex multi-agent LangGraph flows using Respan's detailed trace visualization
Compare LangGraph agent performance against other frameworks with Respan's cross-platform metrics

Run LangGraph in production with Respan

10KFree traces/mo

1,000+Models

5 minSetup

Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 1,000+ models through one gateway.

Try Respan free

Best LangGraph alternatives & competitors

Top companies in Agent Frameworks you can use instead of LangGraph.

LangChain

LangChain Expression Language (LCEL)