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

https://technivorz.com/what-are-the-three-ways-a-chatgpt-trial-can-reach-you/

ChatGPT offers a permanent Free plan anyone can use without time limits. Occasionally, Plus plan trials are available as targeted promotions. Some trials require a payment card and will auto-renew into a paid Plus subscription once the trial ends