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- Metadata-Version: 2.4
- Name: langgraph
- Version: 1.0.5
- Summary: Building stateful, multi-actor applications with LLMs
- Project-URL: Homepage, https://docs.langchain.com/oss/python/langgraph/overview
- Project-URL: Documentation, https://reference.langchain.com/python/langgraph/
- Project-URL: Source, https://github.com/langchain-ai/langgraph/tree/main/libs/langgraph
- Project-URL: Changelog, https://github.com/langchain-ai/langgraph/releases
- Project-URL: Twitter, https://x.com/LangChainAI
- Project-URL: Slack, https://www.langchain.com/join-community
- Project-URL: Reddit, https://www.reddit.com/r/LangChain/
- License-Expression: MIT
- License-File: LICENSE
- Classifier: Development Status :: 5 - Production/Stable
- Classifier: Programming Language :: Python
- Classifier: Programming Language :: Python :: 3
- Classifier: Programming Language :: Python :: 3 :: Only
- Classifier: Programming Language :: Python :: 3.10
- Classifier: Programming Language :: Python :: 3.11
- Classifier: Programming Language :: Python :: 3.12
- Classifier: Programming Language :: Python :: 3.13
- Classifier: Programming Language :: Python :: Implementation :: CPython
- Classifier: Programming Language :: Python :: Implementation :: PyPy
- Requires-Python: >=3.10
- Requires-Dist: langchain-core>=0.1
- Requires-Dist: langgraph-checkpoint<4.0.0,>=2.1.0
- Requires-Dist: langgraph-prebuilt<1.1.0,>=1.0.2
- Requires-Dist: langgraph-sdk<0.4.0,>=0.3.0
- Requires-Dist: pydantic>=2.7.4
- Requires-Dist: xxhash>=3.5.0
- Description-Content-Type: text/markdown
- <picture class="github-only">
- <source media="(prefers-color-scheme: light)" srcset="https://langchain-ai.github.io/langgraph/static/wordmark_dark.svg">
- <source media="(prefers-color-scheme: dark)" srcset="https://langchain-ai.github.io/langgraph/static/wordmark_light.svg">
- <img alt="LangGraph Logo" src="https://langchain-ai.github.io/langgraph/static/wordmark_dark.svg" width="80%">
- </picture>
- <div>
- <br>
- </div>
- [](https://pypi.org/project/langgraph/)
- [](https://pepy.tech/project/langgraph)
- [](https://github.com/langchain-ai/langgraph/issues)
- [](https://docs.langchain.com/oss/python/langgraph/overview)
- Trusted by companies shaping the future of agents – including Klarna, Replit, Elastic, and more – LangGraph is a low-level orchestration framework for building, managing, and deploying long-running, stateful agents.
- ## Get started
- Install LangGraph:
- ```
- pip install -U langgraph
- ```
- Create a simple workflow:
- ```python
- from langgraph.graph import START, StateGraph
- from typing_extensions import TypedDict
- class State(TypedDict):
- text: str
- def node_a(state: State) -> dict:
- return {"text": state["text"] + "a"}
- def node_b(state: State) -> dict:
- return {"text": state["text"] + "b"}
- graph = StateGraph(State)
- graph.add_node("node_a", node_a)
- graph.add_node("node_b", node_b)
- graph.add_edge(START, "node_a")
- graph.add_edge("node_a", "node_b")
- print(graph.compile().invoke({"text": ""}))
- # {'text': 'ab'}
- ```
- Get started with the [LangGraph Quickstart](https://docs.langchain.com/oss/python/langgraph/quickstart).
- To quickly build agents with LangChain's `create_agent` (built on LangGraph), see the [LangChain Agents documentation](https://docs.langchain.com/oss/python/langchain/agents).
- ## Core benefits
- LangGraph provides low-level supporting infrastructure for *any* long-running, stateful workflow or agent. LangGraph does not abstract prompts or architecture, and provides the following central benefits:
- - [Durable execution](https://docs.langchain.com/oss/python/langgraph/durable-execution): Build agents that persist through failures and can run for extended periods, automatically resuming from exactly where they left off.
- - [Human-in-the-loop](https://docs.langchain.com/oss/python/langgraph/interrupts): Seamlessly incorporate human oversight by inspecting and modifying agent state at any point during execution.
- - [Comprehensive memory](https://docs.langchain.com/oss/python/langgraph/memory): Create truly stateful agents with both short-term working memory for ongoing reasoning and long-term persistent memory across sessions.
- - [Debugging with LangSmith](http://www.langchain.com/langsmith): Gain deep visibility into complex agent behavior with visualization tools that trace execution paths, capture state transitions, and provide detailed runtime metrics.
- - [Production-ready deployment](https://docs.langchain.com/langsmith/app-development): Deploy sophisticated agent systems confidently with scalable infrastructure designed to handle the unique challenges of stateful, long-running workflows.
- ## LangGraph’s ecosystem
- While LangGraph can be used standalone, it also integrates seamlessly with any LangChain product, giving developers a full suite of tools for building agents. To improve your LLM application development, pair LangGraph with:
- - [LangSmith](http://www.langchain.com/langsmith) — Helpful for agent evals and observability. Debug poor-performing LLM app runs, evaluate agent trajectories, gain visibility in production, and improve performance over time.
- - [LangSmith Deployment](https://docs.langchain.com/langsmith/deployments) — Deploy and scale agents effortlessly with a purpose-built deployment platform for long running, stateful workflows. Discover, reuse, configure, and share agents across teams — and iterate quickly with visual prototyping in [LangGraph Studio](https://docs.langchain.com/oss/python/langgraph/studio).
- - [LangChain](https://docs.langchain.com/oss/python/langchain/overview) – Provides integrations and composable components to streamline LLM application development.
- > [!NOTE]
- > Looking for the JS version of LangGraph? See the [JS repo](https://github.com/langchain-ai/langgraphjs) and the [JS docs](https://docs.langchain.com/oss/javascript/langgraph/overview).
- ## Additional resources
- - [Guides](https://docs.langchain.com/oss/python/langgraph/guides): Quick, actionable code snippets for topics such as streaming, adding memory & persistence, and design patterns (e.g. branching, subgraphs, etc.).
- - [Reference](https://reference.langchain.com/python/langgraph/): Detailed reference on core classes, methods, how to use the graph and checkpointing APIs, and higher-level prebuilt components.
- - [Examples](https://docs.langchain.com/oss/python/langgraph/agentic-rag): Guided examples on getting started with LangGraph.
- - [LangChain Forum](https://forum.langchain.com/): Connect with the community and share all of your technical questions, ideas, and feedback.
- - [LangChain Academy](https://academy.langchain.com/courses/intro-to-langgraph): Learn the basics of LangGraph in our free, structured course.
- - [Case studies](https://www.langchain.com/built-with-langgraph): Hear how industry leaders use LangGraph to ship AI applications at scale.
- ## Acknowledgements
- LangGraph is inspired by [Pregel](https://research.google/pubs/pub37252/) and [Apache Beam](https://beam.apache.org/). The public interface draws inspiration from [NetworkX](https://networkx.org/documentation/latest/). LangGraph is built by LangChain Inc, the creators of LangChain, but can be used without LangChain.
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