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

https://ricardosinterestingwords.swiftnestly.com/posts/do-us-veterans-really-get-a-full-year-of-chatgpt-plus-for-free

ChatGPT offers a permanent Free plan anyone can use without a trial. Occasionally, OpenAI runs targeted promotions for ChatGPT Plus free trials, which may require a card and will auto-renew into a paid subscription unless canceled