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

https://wiki-net.win/index.php/If_My_Trial_Needs_a_Card,_Will_It_Charge_Exactly_on_the_End_Date%3F

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