ChatGPT offers a permanent Free plan with basic access. Occasionally, targeted...

https://wiki-site.win/index.php/Can_I_Keep_My_Chat_History_if_I_Drop_from_ChatGPT_Plus_Back_to_Free%3F

ChatGPT offers a permanent Free plan with basic access. Occasionally, targeted users can get a trial of the Plus plan that may require a card and auto-renews afterward. To see if you have a trial or when it ends, go to Settings > Subscription