ChatGPT offers a permanent Free plan with basic features available to all...

https://www.foxtrot-bookmarks.win/chatgpt-offers-a-permanent-free-plan-anyone-can-use-without-a-trial

ChatGPT offers a permanent Free plan with basic features available to all users. Occasionally, targeted promotions provide Plus plan trials, which may require a payment card and auto-renew after the trial ends