This article examines the differences among agent frameworks, runtimes, and harnesses in AI development, with a focus on LangChain, LangGraph, and DeepAgents.
Agent frameworks serve as the foundational structures that facilitate the development of intelligent agents. They provide essential tools and guidelines for creating and managing AI systems effectively. These frameworks are crucial for developers to build scalable and efficient AI applications.
Runtimes are the environments where these agent frameworks operate. They enable the execution of agent-based applications and are responsible for managing resources, ensuring optimal performance. Understanding the role of runtimes is vital for developers looking to enhance the efficiency of their AI solutions.
Harnesses, on the other hand, are tools that help integrate and utilize agent frameworks and runtimes more effectively. They streamline the development process by providing additional functionalities that enhance the capabilities of the frameworks and runtimes. This integration allows developers to focus on building robust AI applications without worrying about the underlying complexities.
The LangChain Blog provides detailed insights into these components, particularly highlighting LangChain, LangGraph, and DeepAgents. By exploring their features, developers can better understand how these tools interact and support the AI development landscape.




