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

https://tango-wiki.win/index.php/Does_a_ChatGPT_Trial_Delete_Anything_if_I_Don%E2%80%99t_Upgrade_Afterward%3F

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