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

https://rowansnewwords.tearosediner.net/is-there-a-chatgpt-business-free-trial-button-or-do-i-have-to-talk-to-sales

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