ChatGPT offers a permanent Free plan anyone can use without a trial....

https://www.toro-bookmarks.win/chatgpt-offers-a-permanent-free-plan-available-to-all-users-with-basic-access

ChatGPT offers a permanent Free plan anyone can use without a trial. Occasionally, targeted users get free trials for the Plus plan, which may require a card and automatically renew when the trial ends