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

https://delta-wiki.win/index.php/Does_ChatGPT_Have_a_Referral_Link_Trial_I_Can_Ask_a_Friend_For%3F

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