ChatGPT offers a free plan that anyone can use without time limits....

https://wiki-site.win/index.php/What_Happens_If_My_ChatGPT_Trial_Ends_and_I_Don%E2%80%99t_Want_to_Pay%3F

ChatGPT offers a free plan that anyone can use without time limits. Occasionally, targeted users may get a trial of ChatGPT Plus, which often requires a payment card and auto-renews after the trial ends