The new Twitter X logo at the company's headquarters in San Francisco, California, US, on Saturday, July 29, 2023. Elon Musk has changed Twitter Inc.'s logo, replacing its signature blue bird with a stylized X as part of the billionaire's vision of transforming the 17-year-old service into an everything app. Photographer: David Paul Morris/Bloomberg 
The test, called “Not a Bot,” started Tuesday in New Zealand and the Philippines, X said in a blog post. New users who don’t pay the fee won’t be able to take certain actions on the site, including writing posts, liking, replying or bookmarking.
“This will evaluate a potentially powerful measure to help us combat bots and spammers on X, while balancing platform accessibility with the small fee amount,” according to the San Francisco-based company’s blog post. “Within this test, existing users are not affected.”