LangGraph is a library by LangChain for building stateful, multi-step AI agent workflows as graphs. Each node is an action (LLM call, tool use, decision) and edges define the flow. It enables complex agent behaviors with persistence and human-in-the-loop.

When should I use LangGraph vs LangChain?

Use LangChain for simple chains and RAG pipelines. Use LangGraph when you need complex control flow, state management, cycles (loops), branching, or multi-agent coordination. LangGraph is built on top of LangChain.

Can LangGraph build multi-agent systems?

Yes. LangGraph supports multi-agent architectures where different agents (nodes) have different roles and tools. They can communicate, delegate tasks, and collaborate through the graph structure with shared state.

How does LangGraph handle state persistence?

LangGraph supports checkpointing to databases (SQLite, Postgres, Redis). This enables pausing/resuming workflows, recovering from failures, and human-in-the-loop approval steps where users can review and modify agent actions before continuing.

What is a LangGraph node?

A node is a function that takes state as input and returns updated state. Nodes can call LLMs, execute tools, make decisions, or perform any Python logic. The graph defines how nodes connect and when each executes based on conditions.

How do I add human-in-the-loop to LangGraph?

Use interrupt_before or interrupt_after on nodes where you want human review. The graph pauses, saves state, and waits for approval. Users can modify the state before resuming. Essential for high-stakes agent actions.

Is LangGraph production-ready?

Yes, LangGraph is used in production by many companies. Combined with LangSmith for monitoring and LangGraph Cloud for deployment, it provides enterprise-grade infrastructure for agent applications.

Best LangGraph Blogs & Articles in 2026

Real-time vs. batch processing: the critical architectural choice for multimodal AI systems

pub.towardsai.net Apr 10, 2026

5.50/10 Low Multimodal AI Architecture

🔧 LangChain, LangGraph, PyTorch, MobileNet, EfficientNet, DistilBERT, Azure Event Hubs, Azure Blob Storage

Four AI agents replace three DevOps meetings with automated, secure Terraform generation

pub.towardsai.net Apr 10, 2026

6.50/10 Medium Multi-Agent AI Systems

🔧 LangGraph, tfsec, checkov, FastMCP, Gradio, pydantic-settings, Mermaid.js, uv

Four strategies to intelligently cache AI agent responses without serving stale or wrong data

pub.towardsai.net Apr 8, 2026

6.50/10 Medium Semantic Caching for Agentic AI

🔧 LangGraph, LangChain, RedisVL, ChatOpenAI, gpt-4o-mini, SemanticRouter, HFTextVectorizer, Redis

Open-source AI platform unifies security operations with 98% accuracy and governance guardrails

arxiv.org Apr 8, 2026

7.80/10 Medium AI for Cybersecurity / Agentic AI Platforms

🔧 LanG, LangGraph, Snort 2, Snort 3, Suricata, YARA, Llama Prompt Guard 2, Model Context Protocol (MCP)

Deep Agents v0.5 unlocks async background subagents and expanded multimodal file support

blog.langchain.com Apr 7, 2026

6.50/10 Medium AI Agent Frameworks

🔧 Deep Agents, deepagents, deepagentsjs, AsyncSubAgent, LangGraph Platform, Agent Protocol, FastAPI, LangSmith

Google's Gemma 4 reclaims open-weight AI crown as Anthropic hits $30B revenue

pub.towardsai.net Apr 7, 2026

8.50/10 High Open-Weight AI Models

🔧 Gemma 4, Cursor 3, Veo 3.1 Lite, GLM-5V-Turbo, MAI-Transcribe-1, MAI-Voice-1, MAI-Image-2, Qwen 3.6-Plus

LLMs are stateless math functions — here's how memory systems actually work

pub.towardsai.net Apr 5, 2026

6.50/10 Low LLM Memory Architecture

🔧 LangMem, mem0, Supermemory, LangGraph, LangChain, Google

Build a three-agent AI pipeline in under 100 lines of Python code

dev.to Apr 5, 2026

6.50/10 Medium Multi-Agent AI Development

🔧 OpenAI Agents SDK, LangGraph, CrewAI, LiteLLM, Pydantic, Streamlit, Gradio, Brave Search

Build smarter RAG systems using reasoning-based tree navigation instead of vectors

pub.towardsai.net Apr 4, 2026

6.50/10 Medium RAG Architecture / LLM Engineering

🔧 PyMuPDF, pymupdf4llm, LangGraph, OpenAI API, PageIndex, gpt-4o-mini, OpenAI, Google

Autonomous AI agent doubled RAG recall from 39% to 75% overnight without human intervention

arize.com Apr 4, 2026

7.80/10 Medium RAG Optimization / Autonomous AI Agents

🔧 Claude Code, Arize Skills, LangGraph, OpenSearch, GPT-4o-mini, GPT-4o, text-embedding-3-large, Arize AX CLI

LangGraph vs custom Python: the framework changes wiring, not architecture

dev.to Apr 3, 2026

5.50/10 Low Agentic AI Orchestration Frameworks

🔧 LangGraph, Playwright, StateGraph, TypedDict, GitHub, Facebook, Jabil

Build real-world AI research agents using ReAct pattern with LangGraph in 2026

pub.towardsai.net Apr 3, 2026

5.50/10 Medium AI Agent Development

🔧 LangGraph

8 AI agent frameworks battle-tested in production: here's what actually works

pub.towardsai.net Apr 1, 2026

7.80/10 Medium AI Agent Frameworks

🔧 LangGraph, LangSmith, CrewAI, AutoGen 2.0, OpenAI Agents SDK, Anthropic Agent SDK, Google Agent Development Kit (ADK), LlamaIndex Workflows

AWS launches managed AI agent evaluation service to close the demo-to-production gap

aws.amazon.com Mar 31, 2026

7.50/10 Medium AI Agent Evaluation & Quality Assurance

🔧 Amazon Bedrock AgentCore Evaluations, AgentCore Runtime, AgentCore Observability, OpenTelemetry, OpenInference, Strands Agents, LangGraph, AWS Lambda

One declarative policy file now governs LLMs, agents, and infrastructure simultaneously

arxiv.org Mar 31, 2026

6.50/10 Medium LLM Inference Routing & Agent Orchestration

🔧 Semantic Router DSL, LangGraph, OpenClaw, MCP, A2A, Kubernetes

A hands-on ranking of 10+ AI agents by real-world use case in 2026

reddit.com Mar 29, 2026

5.50/10 Medium AI Agents

🔧 OpenAI Operator, Anthropic Claude Computer Use, Mulerun, Lindy AI, AgentGPT, AutoGPT, CrewAI, LangGraph

Critical security vulnerabilities found in LangChain and LangGraph expose sensitive data

it-boltwise.de Mar 29, 2026

7.50/10 High AI Security Vulnerabilities

🔧 LangChain, LangGraph

AI agent frameworks are becoming the new cloud platforms — here's who's winning

inc42.com Mar 29, 2026

7.20/10 Medium AI Agent Frameworks

🔧 NeMoClaw, OpenClaw, Nemotron, LangChain, LlamaIndex, LangGraph, AutoGen, Vertex AI Agent Builder

A five-phase hands-on guide to mastering LangChain, LCEL, and LLMOps

pub.towardsai.net Mar 27, 2026

4.50/10 Low LLMOps / LangChain Development

🔧 LangChain, LCEL (LangChain Expression Language), LangServe, LangGraph, LangSmith, FAISS, ChromaDB, FastAPI

Build a full agentic AI clinic booking chatbot with LangGraph and OpenAI

pub.towardsai.net Mar 26, 2026

5.50/10 Low Agentic AI / Chatbot Development

🔧 LangGraph, OpenAI GPT-4o-mini, SQLite, Streamlit, LangChain, MemorySaver, GitHub, Jupyter Notebook

Kensho built a LangGraph multi-agent system to unify S&P Global's financial data retrieval

blog.langchain.com Mar 26, 2026

6.50/10 Medium Multi-Agent AI Frameworks

🔧 LangGraph, Grounding (multi-agent framework), RouterGraph, Kensho, S&P Global

New four-phase RAG pipeline cuts LLM hallucinations with 83.7% win rate

arxiv.org Mar 26, 2026

7.20/10 Medium Hallucination Mitigation / Retrieval-Augmented Generation

🔧 LangGraph

Build self-scheduling AI agents in 60 lines of Python using task queues

dev.to Mar 26, 2026

5.50/10 Low AI Agent Architecture

🔧 CrewAI, AutoGen, LangGraph, tinyagents.dev

Build an autonomous stock research agent using ReAct, LangGraph, and LangChain

pub.towardsai.net Mar 25, 2026

6.50/10 Low AI Agent Development / Financial Research Automation

🔧 LangGraph, LangChain, LangChain-OpenAI, yfinance, pandas-ta, Tavily Search API, GPT-4o, MemorySaver

Moda builds production AI design agents so non-designers create polished visuals instantly

blog.langchain.com Mar 24, 2026

6.50/10 Medium AI Agent Architecture / AI Design Tools

🔧 Deep Agents, LangSmith, LangGraph, LangChain, Moda

ByteDance open-sources Deer-Flow 2.0, hits No.1 on GitHub with 35K stars

pandaily.com Mar 24, 2026

7.50/10 Medium AI Agent Frameworks / Open Source

🔧 Deer-Flow 2.0, LangGraph, Tavily, Brave Search, DuckDuckGo, Jina, AIO Sandbox, GitHub

Top Udemy AI agent courses for 2026 to master autonomous workflow automation

analyticsinsight.net Mar 23, 2026

4.50/10 Medium AI Education/Training

🔧 CrewAI, LangGraph, AutoGen, LangChain, GitHub Copilot, Claude Code, Cursor, ElevenLabs

50 years of linguistics research reveals critical design gaps in AI conversation systems

pub.towardsai.net Mar 23, 2026

7.50/10 Medium Conversational AI / Linguistic Pragmatics

🔧 ChatGPT, GPT-4, GPT-2, Self-RAG, MemGPT, Reflexion, IntentSim, LangGraph

Building AI agents that reason better by embracing internal contradiction and self-doubt

pub.towardsai.net Mar 23, 2026

6.50/10 Low AI Agent Architecture

🔧 LangGraph, LangGraph StateGraph, MemorySaver, PostgresSaver, CrewAI, AutoGen, Medium, Google

GitAgent brings Docker-like portability to AI agents across all major frameworks

marktechpost.com Mar 22, 2026

7.20/10 Medium AI Agent Frameworks & Tooling

🔧 GitAgent, LangChain, LangGraph, AutoGen, CrewAI, OpenAI Assistants API, Claude Code, GitHub

Build a LangGraph data analysis agent using real Airbnb dataset

pub.towardsai.net Mar 22, 2026

4.50/10 Low Agentic AI / LLM Engineering

🔧 LangGraph, Airbnb

LangGraph wins for production, CrewAI for speed, AutoGen for Azure enterprise deployments

pub.towardsai.net Mar 21, 2026

7.20/10 Medium AI Agent Frameworks

🔧 LangGraph, CrewAI, AutoGen, LangSmith, LangChain, Azure OpenAI, Microsoft, Intuz

Control Claude Code from your phone, schedule cloud tasks, and 10x your AI skills

theunwindai.com Mar 21, 2026

7.50/10 Medium AI Developer Tools & Autonomous Agents

🔧 Claude Code, Claude Code Channels, LangGraph, Open SWE, autoresearch, Google Stitch, Cursor Composer 2, T3 Code

Build production AI agents and workflows in Go using LangChainGo and LangGraphGo

dev.to Mar 20, 2026

5.50/10 Low AI Application Development in Go

🔧 langchaingo, langgraphgo, invopop/jsonschema, godotenv, DeepSeek API, DeepSeek

LangGraph plans, Temporal executes: building durable 10,000-item LLM pipelines

pub.towardsai.net Mar 19, 2026

6.50/10 Medium AI Agent Architecture

🔧 LangGraph, Temporal, LLM pipelines

Five tools give Claude live stock data for real analyst-grade research

dev.to Mar 19, 2026

5.50/10 Medium AI Agent Tool Integration / Financial AI

🔧 Claude, agent-toolbelt-mcp, AgentToolbelt, LangChain, LangGraph, Polygon.io API, Finnhub API, Financial Modeling Prep API

Why AI agents fail in production and the 4-layer architecture that fixes it

dev.to Mar 19, 2026

7.20/10 Medium AI Agent Architecture

🔧 AutoGen, LangChain, LangGraph, GPT-4, Claude Opus, YouTube, Anthropic, Google

Grab's multi-agent AI system reclaimed 40% of engineering time lost to support

engineering.grab.com Mar 19, 2026

7.20/10 Medium Multi-Agent AI Systems / Data Engineering Automation

🔧 FastAPI, LangGraph, Redis, PostgreSQL, tiktoken, Apache Spark, Airflow, Trino

DataRobot and Nebius launch enterprise AI platform deploying agents in days not months

datarobot.com Mar 18, 2026

7.50/10 Medium Enterprise AI Infrastructure

🔧 DataRobot Agent Workforce Platform, Nebius AI Cloud, Nebius Token Factory, NVIDIA NIM, Hugging Face, Workload API, LangChain, Crew AI

NVIDIA AI-Q blueprint tops accuracy leaderboards for enterprise AI agent research

developer.nvidia.com Mar 18, 2026

8.20/10 Medium Enterprise AI Agents

🔧 NVIDIA AI-Q, LangChain, Deep Agents, LangGraph, LangSmith, NVIDIA NIM, NVIDIA NeMo Agent Toolkit, NVIDIA NeMo Retriever

Breakthrough AI training optimizations and Claude Code best practices reshape production workflows

newsletter.artofsaience.com Mar 18, 2026

8.20/10 Medium AI Training Optimization and Production Best Practices

🔧 Claude Code, SageBwd, SageAttention, FlashAttention2, Penguin-VL, MOOSE-Star, CompACT, Shinka Evolve

AI agent context needs infrastructure-level architecture, not feature-level implementation for production scale

dev.to Mar 18, 2026

7.80/10 Medium AI Infrastructure Architecture

🔧 Kubernetes, LangChain, LangGraph, Redis, Vector database, Ostronaut

Runtime AI monitoring versus structural prevention: two fundamentally different governance approaches

dev.to Mar 18, 2026

7.20/10 Medium AI Governance and Safety

🔧 Singulr AI, Agent Pulse, Copilot Studio, AWS Bedrock, Azure Foundry, GCP Vertex AI, Databricks, ServiceNow

Open-source framework for building internal AI coding agents based on production patterns

blog.langchain.com Mar 17, 2026

7.50/10 Medium AI Agent Architecture

🔧 Open SWE, Deep Agents, LangGraph, Minions, Inspect, Cloudbot, OpenCode, Goose

OpenAI and Anthropic ship major agent upgrades reshaping professional developer workflows

pub.towardsai.net Mar 17, 2026

8.50/10 High AI Development Tools and Infrastructure

🔧 Codex, Claude Code, Cowork, Claude Code Review, Gemini Embedding 2, Nemotron 3 Super, Groundsource, Granite 4.0 1B Speech

Build production-ready Kubernetes incident response agents using LangGraph and PostgreSQL

generativeai.pub Mar 17, 2026

6.50/10 Medium AI Agent Development

🔧 LangGraph, PostgreSQL, Kubernetes

Complete guide to implementing LLM observability from first API call to production scale

pub.towardsai.net Mar 17, 2026

7.50/10 Medium LLM Observability and Production Monitoring

🔧 Langfuse, LangSmith, LangChain, LangGraph, OpenAI API, Anthropic, Cohere, OpenTelemetry

Confidence gates prevent AI enrichment pipelines from shipping half-truths as facts

dev.to Mar 13, 2026

6.50/10 Medium Data Quality Engineering

🔧 Firecrawl, Bing Search API, LangGraph, DEV Community, Microsoft

OpenAI-compatible APIs break in production when you need structured outputs and tools

pub.towardsai.net Mar 12, 2026

7.80/10 High AI Infrastructure and API Compatibility

🔧 OpenAI SDK, Ollama, LangChain, LiteLLM, vLLM, DeepSeek, OpenRouter, n8n

AWS launches AgentCore for enterprise-grade AI agent deployment and management

infoworld.com Mar 12, 2026

7.20/10 Medium AI Agent Infrastructure

🔧 Amazon Bedrock, Amazon Bedrock AgentCore, Strands, LangGraph, Microsoft Autogen, OpenAI Agents SDK, Google Agent Development Kit, CrewAI

Latest LangGraph Articles

Related Topic Collections

Browse by Audience

Frequently Asked Questions about LangGraph