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

https://romeo-wiki.win/index.php/Can_I_Use_a_ChatGPT_Trial_More_Than_Once_on_the_Same_Account%3F

ChatGPT offers a permanent Free plan anyone can use without a time limit. Occasionally, targeted users get a Plus trial, which may require a payment card and auto-renews unless canceled. To check when your trial ends, go to Settings - Subscription