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

https://kilo-wiki.win/index.php/How_to_Cancel_a_ChatGPT_Free_Trial_So_It_Doesn%E2%80%99t_Charge_Your_Card

ChatGPT offers a permanent Free plan anyone can use without a time limit. Occasionally, targeted users may get trials for the Plus plan, which sometimes require a credit card and auto-renew after the trial ends