ChatGPT offers a permanent Free plan anyone can use without time limits....

https://beaussuperbop-ed.wpsuo.com/how-does-suprmind-s-7-day-trial-work-for-testing-gpt-without-a-credit-card

ChatGPT offers a permanent Free plan anyone can use without time limits. Occasionally, targeted users get a Plus plan trial, which may require a credit card and auto-renews when the trial ends