X CEO Linda Yaccarino is stepping down from her post, one day after the platform’s artificial intelligence chatbot Grok took on an antisemitic persona and started calling itself “MechaHitler.” Yaccarino served two years in the role after being hired by owner Elon Musk. “When Elon Musk and I first spoke of his vision for X, I knew it would be the opportunity of a lifetime to carry out the extraordinary mission of this company,” Yaccarino posted on X. “I’m immensely grateful to him for entrusting me with the responsibility of protecting free speech, turning the company around, and transforming X into the everything app.” Editor's note: This story is breaking and will be updated with additional details.