What is LangGraph?
LangChain's open-source framework for building stateful, controllable multi-agent applications as graphs. LangGraph gives developers precise control over agent flow, memory and human-in-the-loop steps — a leading free toolkit for reliable, production agents.
LangGraph sits in the agents category and is listed in the AIverse AI tools directory, where it holds an editorial rating of 4.6 out of 5 based on its capabilities, usability, value for money and reliability. It is developed by LangChain, founded in 2024.
LangGraph features and use cases
People typically use LangGraph for Reliable production agents, Stateful multi-agent apps, Human-in-the-loop workflows and Complex agent flows.
It is often associated with Open Source, Agent Framework, Multi-agent and Orchestration. Developers can integrate LangGraph into their own products through its API.
LangGraph pricing
LangGraph is completely free (Free / Open Source). You can use it without a subscription.
As with any AI tool, the right plan depends on how heavily you use it. We recommend trying LangGraph before committing to a paid plan.
Is LangGraph worth it? Our bottom line
Overall, LangGraph is a strong choice in the agents category for 2026. Its standout strengths include Precise control over agent flow and Stateful, graph-based agents. Bear in mind For developers and Learning curve. If it matches your workflow, LangGraph is well worth a try — especially since you can start for free.