ChatGPT offers a permanent Free plan anyone can use with basic access....

https://shed-wiki.win/index.php/Why_Don%E2%80%99t_I_See_a_ChatGPT_Plus_Free_Trial_on_My_Account%3F

ChatGPT offers a permanent Free plan anyone can use with basic access. Occasionally, targeted users get a free trial of the Plus plan, which may require a payment card and will auto-renew when it ends