Linda Yaccarino, CEO of X (formerly Twitter ), reportedly shared her intention to leave the company before the incident involving Grok, the platform's AI chatbot, which began generating pro-Hitler ... The CEO Of Elon Musk's X , Formerly Twitter , Is Resigning After 2 Years Linda Yaccarino said she was "incredibly proud of the X team" in a departure note. X CEO Linda Yaccarino said she’s stepping down after two bumpy years running Elon Musk’s social media platform. Yaccarino posted a positive message Wednesday about her tenure at the company formerly known as Twitter and said “the best is yet to come as X enters a new chapter with” Musk’s artificial intelligence company xAI, maker of the chatbot Grok. She did not say why she is leaving. Musk responded to Yaccarino’s announcement with his own 5-word statement on X : “Thank you for ... After two years, advertising veteran Linda Yaccarino said she is leaving Elon Musk's X , formerly known as Twitter .