ChatGPT offers a permanent Free plan with basic features available to all...

https://lanesniceblog.scriblorax.com/posts/can-i-use-a-chatgpt-trial-more-than-once-on-the-same-account

ChatGPT offers a permanent Free plan with basic features available to all users. Occasionally, targeted promotions provide a trial of the Plus plan, which may require a payment card and auto-renews after the trial ends