Elon Musk's artificial intelligence startup xAI faces mounting scrutiny as co-founder Jimmy Ba becomes the sixth core team member to exit. The University of Toronto professor's departure follows five other founding engineers leaving the closely watched AI venture since its July 2023 launch.

The exits raise questions about stability at Musk's newest tech initiative. xAI positions itself as a competitor to OpenAI and Anthropic, with Musk claiming it will develop "maximally curious" AI systems. However, rapid turnover among technical leadership complicates these ambitions during a critical growth phase.

Founding team defections threaten to slow development of xAI's first product - a ChatGPT rival called Grok. While Musk's ventures often face turbulence, losing six original researchers in nine months presents unique challenges for recruiting top AI talent in an increasingly competitive market.