langchain-ai/langgraph
langgraph
Build resilient agents.
Usage guide
langgraph is an open-source project around agents, ai-agents, chatgpt with 35,968 GitHub stars. This guide focuses on when to use it, how to install it, how to run the first example, and what to verify before adopting it.
Key features
- Implemented mainly in Python, useful for judging integration effort in a similar stack.
- GitHub detected the MIT repository license, which generally permits commercial use. This signal only covers the repository license; review its obligations and any model weights, datasets, dependencies, or external services before commercial adoption.
- The project has a homepage, so cross-check docs, examples, and release information beyond GitHub.
Best for
- Evaluating langgraph for Python AI workflows.
- Comparing a GitHub project with 35,968 stars and current repository activity.
Pros
- langgraph has visible GitHub traction with 35,968 stars. Topics: agents, ai, ai-agents.
- The project provides an external homepage for deeper evaluation.
Cons
- Production fit still depends on documentation depth, issue activity, and release cadence.
- License review should confirm the MIT terms fit your use case.
Production readiness
langgraph should be validated with its README, release history, open issues, and integration requirements before production use.
License risk
MIT is reported by GitHub; review the repository license before redistribution or commercial use.
langgraph architecture preview
langgraph's main path starts at the entry surface, runs through Agent orchestration runtime, combines OpenAI / Gemini, Files / repository context, GitHub, and returns Grounded answers / search results.
Entry
Web / product entry
Users start from a web UI, hosted product surface, or browser-based workflow.
https://docs.langchain.com/oss/python/langgraph/
Runtime
Agent orchestration runtime
The orchestration layer plans tasks, calls tools, manages context, and decides the next action.
agent workflow
Model
OpenAI / Gemini
Model calls are likely routed through OpenAI, Gemini based on README and topic signals.
OpenAI, Gemini
Context
Files / repository context
Context comes from Files / repository context, which constrains what the model or runtime can use.
Files / repository context
Tools
GitHub
Tool adapters let the runtime act outside the model through GitHub.
GitHub
Output
Grounded answers / search results
The final result is an answer or ranked result grounded in retrieved context.
answer output
Featured video
freeCodeCamp.org
LangGraph Complete Course for Beginners – Complex AI Agents with Python
728,530 views · 2025-05-20
Install tutorial
Before you install
- Python runtime and an isolated virtual environment
- A clean working directory for the first test run
Check the runtime environment
langgraph depends on a Python-style environment. Use venv, conda, or a container to keep dependencies isolated.
Get the project files
Start from the official repository or package so the first run matches the documented behavior.
$ git clone https://github.com/langchain-ai/langgraph.gitInstall or build dependencies
No extra setup command was detected. Check the README before adding custom configuration.
Adoption guidance and sources
Practical use cases
Agent workflow prototype
Use it to validate task decomposition, tool calling, memory, tool permissions, and result review loops.
Knowledge-base assistant
Use it for document-grounded AI workflows where retrieval quality matters.
Build resilient agents.
This is one of the documented reasons to evaluate langgraph before choosing a stack.
Focus area: agents
This is one of the documented reasons to evaluate langgraph before choosing a stack.
RAG project comparison
Compare langgraph with similar projects before committing to a stack.
Before adopting
- Complete one clean-environment verification using the official langgraph setup path.
- Review repository license, model weights, external services, and dependency terms for your use case.
- Check recent commits, release cadence, issue response, and documentation depth.
- Evaluate output quality, latency, resource usage, and recovery behavior with a small dataset.
Configuration notes
- Review README configuration notes before using production data.
Sources checked
These links are used to verify repository, documentation, or tutorial details. Review the source pages before adopting the project.
Troubleshooting
- If installation fails, first confirm the command is being run from the README-specified directory.
- If dependencies conflict, retry in a fresh virtual environment, container, or working directory.
- If output looks wrong, return to the smallest documented langgraph example before adding complex data.
- For keys, model files, or external services, verify environment variables, local paths, and permissions one by one.
- Before production use, review recent updates, open issues, license terms, and safety boundaries.
What is langgraph?
langgraph is an open-source rag project. Build resilient agents.
How do I install langgraph?
Start with the official README. The first detected setup step is: git clone https://github.com/langchain-ai/langgraph.git.
Is langgraph beginner-friendly?
If you already know the Python ecosystem, start with the smallest example. Otherwise test it in an isolated environment first.
Can langgraph be used commercially?
GitHub detected the MIT repository license, which generally permits commercial use. This signal only covers the repository license; review its obligations and any model weights, datasets, dependencies, or external services before commercial adoption.
Does langgraph need a GPU?
GPU requirements depend on the workload, model, and dataset size. Start with the smallest README example before scaling up.
How should I decide whether to adopt langgraph?
Evaluate setup cost, maintenance activity, issue health, license terms, and fit with your real workflow.