What an AI agent actually is
ChatGPT answers questions. An agent does work. That's the whole difference.
A chatbot waits for you to type, thinks, and types back. An agent is given a goal — "sort today's invoices and flag anything unusual," "turn this voice memo into a week of posts," "answer every booking inquiry within a minute" — and then uses tools to get it done: it reads your email, checks your calendar, writes to your spreadsheet, sends the reply. You review the result instead of doing the task.
A chatbot is an employee you have to talk to all day. An agent is one you brief once.
Agents are built from three parts: a model (the brain), tools (hands — your email, docs, CRM, bank feed), and instructions (the SOP it follows, written in plain language). If your business has a task that follows rules, happens repeatedly, and lives in software, an agent can probably do it.
What agents are not: magic. They're wrong sometimes, they need clear instructions, and they need someone who knows how to wire them into your actual systems safely. That last part is the job.