ChatGPT offers a permanent Free plan anyone can use without time limits....

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

ChatGPT offers a permanent Free plan anyone can use without time limits. Occasionally, targeted users may get a Plus free trial, which usually requires a payment card and auto-renews when it ends