Some of ChatGPT's most useful controls are switched off by default or buried where casual users never look. These aren't the types of features that can be easily measured in benchmark tests or advertised as "smarter" features, yet when enabled, they significantly change how the tool behaves for you specifically.
Here are three worth finding. Each fixes a different complaint: one shapes how ChatGPT talks to you, one controls how hard it thinks and one decides what it keeps.
