A chatbot for our purposes is a large language model (LLM) that accepts an input prompt and produces a response. An agent also tries to respond to some human directives by wielding a set of tools and services, often taking several steps to complete whatever mission a human instructed it to perform.

ChatGPT agent is available for Pro users now, with Plus and Team users following in the next few days. Enterprise and Edu tiers will get it in a matter of weeks.