X CEO Linda Yaccarino announced she was stepping down from her position a day after the company’s Grok artificial intelligence chatbot went haywire and began calling itself “MechaHitler.” Yaccarino’s departing message was positive and did not mention Tuesday’s scandal.

At another event, she shared the stage with tennis legend Serena Williams, discussing a podcast hosted by the star and her sister Venus that is set to debut on X this summer.

In a post on the social media platform, she said was "immensely grateful" to Musk for "entrusting me with the responsibility of protecting free speech, turning the company around, and transforming X i...