ChatGPT offers a permanent Free plan with basic access available to everyone....

https://wiki-neon.win/index.php/What_Are_the_Three_Ways_a_ChatGPT_Trial_Can_Reach_You%3F

ChatGPT offers a permanent Free plan with basic access available to everyone. Occasionally, targeted users may get a free trial of ChatGPT Plus, which usually requires a payment card and auto-renews when the trial ends