What is an AI Agent?

AI agents are software systems designed to perform tasks with minimal human intervention by continuously sensing, thinking, and acting autonomously. The advancements in large language models (LLMs) have simplified their development, making sophisticated AI agents more accessible. These agents can handle fragmented systems, endless decisions, exponential complexity, and real-time adaptation. To function effectively, AI agents use personalized data, real-time memory, and tool calling, but they face challenges such as error propagation, setup time, complexity, cost, maintenance, and security. The evolution of AI agents aims to replace rigid rule-based systems with adaptive, practical systems.