xAI Burned $6.4B Last Year, SpaceX Filing Reveals

Elon Musk’s AI company, xAI, lost $6.4 billion in 2025, according to a SpaceX IPO filing that offers the first detailed look at the startup’s financials. The filing reveals massive spending on AI infrastructure, including data centers, compute resources, and model development, as xAI pursues an aggressive expansion of its Grok chatbot and underlying models. Despite the staggering losses, xAI continues to invest heavily, signaling Musk’s long-term bet on dominating the AI landscape. The company has been racing to scale its compute clusters and attract top talent, often competing with giants like OpenAI and Google. The losses are largely attributed to the enormous cost of training large language models and building out cloud infrastructure. However, xAI’s revenue remains minimal, as the company has yet to monetize Grok at scale. The filing also reveals that xAI has secured significant funding from investors, including commitments tied to Musk’s other ventures. The disclosure comes as SpaceX prepares for its own IPO, providing an unusual level of transparency into xAI’s finances. Analysts are divided on whether the heavy spending will pay off, with some pointing to xAI’s rapid progress in model performance and others warning of unsustainable burn rates. For now, Musk appears undeterred, with plans to expand Grok’s capabilities and integrate it across his ecosystem of companies, including Tesla and X. The filing underscores the high-stakes nature of the AI arms race, where even well-funded startups must spend billions to stay competitive.