ChatGPT offers a permanent Free plan with basic features available to all...

https://iris-wiki.win/index.php/Why_Does_My_Colleague_in_Another_Country_See_a_ChatGPT_Trial_and_I_Don%E2%80%99t%3F

ChatGPT offers a permanent Free plan with basic features available to all users. Occasionally, targeted promotions provide a trial of the Plus plan, which may require a payment card and auto-renews after the trial ends