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

https://miassmartop-eds.capitaljays.com/posts/why-do-two-people-get-different-chatgpt-trial-offers

ChatGPT offers a permanent Free plan anyone can use without a time limit. Occasionally, targeted users get a Plus trial, which may require a payment card and auto-renews unless canceled. To check when your trial ends, go to Settings - Subscription