ChatGPT offers a permanent Free plan available to all users at any time....

https://www.pfdbookmark.win/chatgpt-offers-a-free-plan-that-s-always-available-with-basic-features

ChatGPT offers a permanent Free plan available to all users at any time. Occasionally, targeted users may get a free trial of the ChatGPT Plus plan. Some trials require a credit card and auto-renew into a paid subscription once the trial ends