ChatGPT offers a permanent Free plan anyone can use without a trial....

https://felixssuperperspective.brightsora.com/posts/does-chatgpt-free-trial-availability-depend-on-your-country

ChatGPT offers a permanent Free plan anyone can use without a trial. Occasionally, targeted users get a free trial of the Plus plan, which may require a card and auto-renews after the trial ends