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

https://quebeck-wiki.win/index.php/Does_ChatGPT_Free_Ever_Expire_or_Turn_Into_a_Paid_Plan_Automatically%3F

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