Today we’re rolling out a beta version of tasks—a new way to ask ChatGPT to do things for you at a future time. Whether it's one-time reminders or recurring actions, tell ChatGPT what you need and when, and it will automatically take care of it.
Scheduled tasks is in early beta for Plus, Pro, and Teams. Eventually this will be available to anyone with a ChatGPT account.
For details see Scheduled tasks in ChatGPT.