ChatGPT offers a permanent Free plan anyone can use without a trial....

https://direct-wiki.win/index.php/Can_I_Sign_Up_for_ChatGPT_Plus_at_$20_a_Month_and_Still_Get_a_Trial_Later%3F

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