I’ll assume that you can read what was linked and don’t need it parroted.
That instead, you might not be familiar with Operator itself. A ChatGPT Pro feature.
Operator is a research preview of an agent that can go to the web to perform tasks for you. It can automate various tasks—like filling out forms, booking travel, or even creating memes—by remotely interacting with a web browser much as a person would, via mouse clicks, scrolling, and typing.
Who can use Operator?
Operator is available at operator.chatgpt.com. Currently, Operator can only be accessed by ChatGPT Pro users who are at least 18 years of age.
Here’s a bit more demo of the difference of changing models: https://help.openai.com/en/articles/10561834-operator-release-notes