Former Meta chief AI scientist and AMI Labs founder Yann LeCun has intensified his ongoing critique of Elon Musk’s artificial intelligence efforts, publicly labeling Musk’s xAI venture a failure during a Thursday CNBC interview. LeCun expressed strong skepticism regarding the startup’s long-term viability, asserting that xAI lacks the capacity to compete at the frontier of large language model development. According to LeCun, xAI’s operational struggles stem largely from Musk’s management style, which he argues has severely hampered the company’s ability to attract and retain top talent. This assessment aligns with recent reports indicating that all non-Musk co-founders have departed the company, with the last remaining insider abruptly losing system access earlier this year. LeCun further pointed to xAI’s strategy of leasing its substantial data center infrastructure to rival firms, including Anthropic, as evidence of financial underperformance. He suggested that renting out facilities is primarily a cost-recovery measure rather than a sustainable growth model. Despite his harsh evaluation of xAI, LeCun maintained a more measured perspective on Musk’s other enterprise ventures. He acknowledged SpaceX’s continued success, noting that its recent public offering has proceeded smoothly. Regarding Tesla, LeCun conceded that his own vehicle provides utility, though he maintained that the company’s full self-driving technology remains incomplete. Neither xAI nor SpaceX responded to requests for comment regarding LeCun’s remarks. The comments underscore a persistent professional rivalry between two of the most visible figures in technology and AI research. While LeCun continues to advocate for open, research-driven AI development, his direct challenges to Musk’s commercial approach highlight ongoing industry debates regarding leadership, talent retention, and the economic sustainability of large-scale AI infrastructure investments.