ChatGPT offers a permanent Free plan with basic features for all users....

https://eduardosnicechat.publishlane.com/posts/does-chatgpt-have-a-referral-link-trial-i-can-ask-a-friend-for

ChatGPT offers a permanent Free plan with basic features for all users. Occasionally, targeted promotions provide free trials for the Plus plan, which may require a card and auto-renew unless canceled