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

https://uniform-wiki.win/index.php/Can_I_Keep_My_Chat_History_if_I_Drop_from_ChatGPT_Plus_Back_to_Free%3F

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