LangGraph Studio, announced in open beta, is the first integrated development environment (IDE) designed specifically for developing agentic applications, providing developers with tools to visualize, interact with, and debug complex agent systems. Building on the LangGraph framework, which launched in January 2023, this IDE aids in the creation of highly domain-specific cognitive architectures that require more than a single large language model (LLM) call, offering a persistence layer for human-in-the-loop interactions. While traditional coding remains essential, LangGraph Studio enhances the development process by allowing real-time interaction with agent graphs, enabling developers to modify and iterate on agent trajectories and underlying code efficiently. Available as a desktop app for Apple Silicon, LangGraph Studio requires users to sign in with a LangSmith account, facilitating the setup of agent environments and offering a seamless experience for developers to simulate, debug, and iterate on agent behavior.