AI agent

An AI agent is an autonomous software or system component that perceives its environment, makes decisions, and takes actions to achieve goals. An agent typically combines a model or learning mechanism with sensors (inputs/observations) and actuators (output/actions) — the underlying AI model(s) are only one part of the whole. AI agents can be reactive, deliberative, learning-based, or part of multi-agent systems, and appear as chatbots, virtual assistants, game NPCs, or autonomous robots/drones.

Imagine a mobile app that, based on your calendar, location and preferences, automatically suggests a daily schedule and sends reminders; the background service that reads data, weighs options and initiates actions (booking a ride, sending a notification) acts as an AI agent. In an XR game an AI agent can control NPC behavior: it observes player positions, decides using a behavior tree or policy, and executes movements in the 3D world. In audio/video production an agent might analyze raw footage, tag scenes and propose edits, automating repetitive tasks for human editors.