ChatGPT offers a free plan that anyone can use without time limits....

https://stateofseo.com/does-chatgpt-free-ever-expire-or-turn-into-a-paid-plan-automatically/

ChatGPT offers a free plan that anyone can use without time limits. Occasionally, targeted users may get a trial of ChatGPT Plus, which often requires a payment card and auto-renews after the trial ends