Elon Musk’s xAI sees co-founder exit, Jimmy Ba bids farewell

In a surprising turn of events, Elon Musk's AI venture xAI has experienced a significant leadership change with the recent departures of co-founders Tony Wu and Jimmy Ba within just two days. Following Wu's resignation, Ba took to X (formerly Twitter) to share his heartfelt goodbye, expressing gratitude to Musk for the opportunity to be part of this groundbreaking journey. In his farewell message, Ba reflected on his time at xAI, stating, "Enormous thanks to @elonmusk for bringing us together on this incredible journey. I’m immensely proud of what the xAI team has accomplished, and I will continue to support the team as a friend. The bonds we formed here are truly invaluable." As Ba prepares to move on, he remarks, "It’s time to recalibrate my gradient on the big picture," hinting at future endeavors. He believes that 2026 holds tremendous potential, describing it as likely the busiest and most pivotal year for humanity. At xAI, Ba played an integral role as a core researcher, contributing significantly to the development of the Grok series of AI models, including the anticipated Grok 4. His departure follows a trend of co-founder exits, with several others, including Igor Babuschkin, Kyle Kosic, and Christian Szegedy, having already left since the company's inception in 2025. Just last month, Greg Yang also stepped down, citing health issues. The recent exits, particularly after xAI's merger with SpaceX, raise questions about potential impacts on leadership dynamics and internal organization. As the company navigates this transitional phase, the AI community watches closely to see how these changes will shape its future.