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

https://www.slideserve.com/aaron_ward92/how-to-explain-to-your-boss-why-there-s-no-guaranteed-chatgpt-pro-trial

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