SpaceX Invests $2 Billion in Elon Musk’s AI Startup xAI

October 21, 2025

Usman Latif

SpaceX is investing $2 billion in xAI, Elon Musk’s artificial intelligence startup, in one of the space company’s largest investments outside its core operations. According to The Wall Street Journal, which cited sources close to both companies, the investment amounts to nearly half of xAI’s recent equity raise and signals Musk’s continued reliance on his network of businesses to back his AI ambitions. The move strengthens xAI’s position as it competes directly with OpenAI and other industry leaders. Earlier this year, Musk merged xAI with his social media platform X, valuing the combined entity at $113 billion. The integration has helped xAI scale quickly by leveraging the reach and infrastructure of X. Musk has shifted much of his focus to xAI’s development, particularly the latest version of its Grok chatbot. The updated Grok 4 model was released this week, which Musk described as both impressive and concerning. Calling it “the smartest AI in the world,” he likened it to a super-intelligent child needing the right moral foundation. “This is the smartest AI in the world,” Musk said. “In some ways, it’s terrifying.” He expressed hope that instilling values such as truthfulness and honor could guide the technology toward positive outcomes for humanity, though he admitted feeling uneasy about the power of intelligence surpassing human capabilities. The report also notes that SpaceX, while currently enjoying strong revenue growth, is simultaneously investing heavily in Starship, its next-generation rocket. That project has faced delays and recent technical challenges, including a major explosion during an engine test last month. The financial commitment to xAI could therefore add risk to SpaceX’s ongoing operations. In a broader AI context, recent research shows that chief financial officers are rapidly adapting to AI developments. A June survey by PYMNTS Intelligence found that every CFO polled said generative AI has increased the need for more employees with analytical skills—a steep rise from 60% in March 2024. The report also revealed that over a quarter of CFO job listings now call for AI expertise, reflecting the growing integration of AI across all levels of business strategy.