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

https://wiki-tonic.win/index.php/Is_the_Suprmind_Trial_Really_No_Credit_Card_and_How_Long_Is_It%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