But you don't pay for GPT-4, you pay for a product called ChatGPT Plus, which allows you to write 40 messages to GPT-4 within a three-hour time window, after wh

But you don't pay for GPT-4, you pay for a product called ChatGPT Plus, which allows you to write 40 messages to GPT-4 within a three-hour time window, after which you need to switch to 3.5 in the menu.