ChatGPT offers a permanent free plan anyone can use with no time limit....

https://connersinterestingblog.theglensecret.com/is-there-any-legit-way-to-try-gpt-if-no-chatgpt-promotion-shows-up

ChatGPT offers a permanent free plan anyone can use with no time limit. Occasionally, targeted users get Plus trials that may require a card and auto-renew unless canceled