ChatGPT offers a permanent free plan with basic access for all users....

https://www.golf-bookmarks.win/chatgpt-offers-a-free-plan-that-anyone-can-use-indefinitely-plus-trials-are

ChatGPT offers a permanent free plan with basic access for all users. Occasionally, targeted free trials for the ChatGPT Plus plan are available and may require a payment card and auto-renewal setup