X uses Grok to publish AI-generated summaries of news and other topics that are popular on the platform. The feature, which is currently only available to premium subscribers, is called “X Stories,” according to from the company’s engineering account.

According to X, Grok relies on user posts to generate text snippets. Some seem more focused on news, while others are summaries of conversations happening on the platform itself. One user screenshot showing stories about Apple’s earnings report and aid to Ukraine, and one about “Musk, experts debate national debt,” which was a summary of a “candid online discussion” between Musk and other “prominent figures” on X.

If any of this sounds familiar, it’s also remarkably similar to Moments, Twitter’s long-running feature that curated authoritative tweets about important news and cultural moments on the platform. The feature, which was monitored by a team of human employees, was killed

Like other generative AI tools, Grok summaries come with a disclaimer. “This story is a compilation of posts on X and may evolve over time,” it said. “Grok can make mistakes, check your results.” Grok, of course, doesn’t exactly have the best track record when it comes to accurately interpreting current events. It previously generated speculation that NBA player Klay Thompson engaged in “vandalism” because he couldn’t understand what “throw bricks” meant in the context of a basketball game.