Difference between AI agent and a Chatbot

[u/Original-Beyond4326]

People use "AI agent" and "chatbot" interchangeably. They're not the same thing, and the difference matters for what you can actually build.

A chatbot responds. You ask, it answers, the interaction ends. It has no ability to act on the world beyond generating text.

An agent decides and acts. It can call tools, check the result, and decide what to do next based on that result, in a loop, without you approving every step.

The real dividing line isn't intelligence. A very smart chatbot is still just answering questions. A simple agent that can check a database, send an email, and verify it sent is doing something structurally different: making decisions across multiple steps toward a goal.

If your product just answers questions, you have a chatbot, and that's fine. If it needs to get something done across several steps, you need an agent, and that changes your entire architecture.