ChatGPT offers a permanent Free plan for all users with basic access....

https://zoom-wiki.win/index.php/ChatGPT_Plus_Free_Trial_vs_Free_Plan:_What%E2%80%99s_the_Difference%3F

ChatGPT offers a permanent Free plan for all users with basic access. Occasionally, targeted promotions provide a free trial of the Plus plan, which may require a card and auto-renews unless canceled