Definition
What is AI Agent?
An AI agent is an autonomous software system that uses artificial intelligence to perceive its environment, make decisions, and take actions to achieve a defined goal without continuous human oversight.
How it works
Unlike a simple chatbot that responds to prompts, an AI agent can plan multi-step actions, use tools (APIs, databases, browsers), and adjust its approach based on results. For example, an AI sales agent might research a prospect on LinkedIn, draft a personalized email, check the CRM for past interactions, and schedule a follow-up, all autonomously. AI agents are built using large language models combined with tool-calling capabilities and memory. They represent the next evolution of automation, moving from fixed workflows to adaptive, goal-driven systems.
Related terms
Last updated: March 2026