What is an AI agent, actually?
An AI agent is an AI system that can take actions toward a goal, not just produce text. Where a chatbot answers and stops, an agent works in a loop: it does something, looks at what happened, and decides the next step, repeating until the task is done or it needs help.
The loop is the definition
The practical test for whether something is an agent is simple. Does the system observe the result of its own action and act again without a human prompting each step? If yes, it is operating as an agent. If every step requires you to read the output and type the next instruction, it is a tool you are driving by hand.
That loop is what lets agents do multi-step work: research a topic across many sources, write and debug code until tests pass, fill out a workflow across several applications, or monitor something and act when a condition is met.
What agents can do today
Current agents are strongest where the environment gives clear feedback: code that runs or fails, searches that return results, forms that submit or error. They are weaker where feedback is fuzzy, stakes are irreversible, or the task runs so long that early mistakes compound.
In practice most production agents today are narrow: a coding agent, a research agent, a support triage agent. The general-purpose agent that handles anything you throw at it is the direction of travel, not the shipped reality.
Where the term gets abused
“Agent” is currently doing heavy marketing duty. A scripted automation with an LLM bolted on is not an agent in any meaningful sense, and neither is a chatbot with a new name. If the system cannot deviate from a predefined sequence when reality deviates from the script, it is automation, which is useful, but different.
The distinction matters for buyers: agents earn their complexity when the task genuinely branches. If the steps never change, a simple automation is cheaper, faster and easier to debug.
Quick answers
Is ChatGPT an agent?
The chat interface itself is not. It becomes agent-like when it can execute multi-step tasks with tools, like browsing, running code or operating a computer, and carries the task forward on its own.
What is the difference between an agent and an assistant?
An assistant responds to you turn by turn. An agent is given a goal and works through the steps itself, checking its own progress along the way.
Are AI agents safe to give real access?
Scoped access is the norm: agents typically run with specific permissions, sandboxes and approval steps for irreversible actions. The safety of the setup depends on how narrow that scope is.