Agents

Agents in AI

What is an AI Agent?

An AI agent is anything that perceives its environment through sensors and acts upon it through actuators to achieve specific goals.

Types of Agents

Agent TypeDescription
Simple Reflex AgentActs only on the current percept, ignoring history
Model-Based Reflex AgentMaintains an internal model of the world
Goal-Based AgentChooses actions based on achieving specific goals
Utility-Based AgentSelects actions that maximize a utility (happiness) function
Learning AgentImproves its performance over time through experience

Agent Architecture

Agents follow a perceive-think-act cycle: they gather percepts from their environment, reason about the best action, and then act — continuously repeating this loop.

Multi-Agent Systems

Multiple agents can work together or compete, coordinating through communication protocols to solve problems more complex than any single agent could handle alone.

Key Takeaway: Mastering this topic is a key step toward becoming a well-rounded AI professional, capable of building real-world, intelligent systems.

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