The article references two different levels of ChatGPT processing power that a non-subscribed user has: "Users have access to a small number of requests that use the most advanced ChatGPT capabilities, and requests are downgraded to a basic version of ChatGPT after that."
By default a ChatGPT request should go to the basic level, with the ability to select which level when it asks us about sending the query to ChatGPT. (If that is current behavior, my apologies, that's not clear from the article.)
-R