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

https://lanesniceblog.scriblorax.com/posts/is-there-a-standard-1-month-chatgpt-plus-free-trial

ChatGPT offers a permanent Free plan anyone can use without time limits. Sometimes, targeted users get free trials for the Plus plan, which may require a payment card and auto-renew when the trial ends