Mark Zuckerberg returned to Elon Musk's X after three years in 2026, Meta CEO tells its these engineers and researchers who made him do it

Facebook founder Mark Zuckerberg has resumed his activity on Elon Musk’s social network X in 2026, ending a three-year hiatus away from the rival microblogging platform. He originally restarted posting on the platform to announce news regarding Muse Spark 1.