Musk’s xAI Loses $1.46 Billion While Racing to Build AI for Tesla Optimus Robots

TLDR

• Elon Musk’s xAI posted a $1.46 billion net loss in Q3 2025, up from $1 billion in Q1
• The AI startup burned through $7.8 billion in cash during the first nine months of 2025
• Revenue nearly doubled to $107 million in Q3, but may miss the $500 million annual target set in June
• xAI raised $20 billion in its latest funding round, valuing the company at $230 billion
• The company plans to use AI to eventually power Tesla’s Optimus humanoid robots

Elon Musk’s artificial intelligence startup xAI reported a $1.46 billion net loss for the quarter ending September 2025, according to internal financial documents. The loss represents an increase from the $1 billion loss the company posted in the first quarter of 2025.

The AI company burned through $7.8 billion in cash during the first nine months of 2025. This rapid spending reflects xAI’s push to build data centers, hire top talent, and develop AI software.

xAI’s main goal is to create self-sufficient AI that will eventually power Tesla’s Optimus humanoid robots. These robots are designed to replace human workers in various tasks.

The company’s revenue showed growth during the same period. Revenue nearly doubled from the previous quarter to reach $107 million for the three months ending September 30, 2025.

Through September, xAI reported total sales of over $200 million for the year. Gross profit increased to $63 million in Q3, up from $14 million in the previous quarter.

Despite the revenue growth, xAI executives acknowledged the company may miss its annual revenue target. In June, the company had set a goal of $500 million in revenue for the full year.

Recent Funding Round

xAI recently completed a $20 billion equity funding round. The round included investments from Nvidia Corp., Valor Equity Partners, and the Qatar Investment Authority.

The funding round valued xAI at $230 billion. Company executives told investors that current cash reserves can support monthly spending of under $1 billion for at least a year.

xAI has raised at least $40 billion in equity funding to date. The company is also raising debt financing alongside its equity raises.

Expansion Plans

Chief Revenue Officer Jon Shulkin told investors on a recent call that xAI’s focus is on quickly building AI agents and other software. These products will feed into what Musk calls “Macrohard,” a play on Microsoft’s name for an AI-only software company.

The company is expanding its Colossus data center in Memphis, Tennessee. xAI recently purchased a third building in the area, which will bring computing capacity to nearly 2 gigawatts of power.

xAI has partnered with Valor and Apollo Global Management on a special vehicle to purchase Nvidia chips. The company expects to complete more deals soon to continue building out its data center infrastructure.

The company’s EBITDA loss totaled $2.4 billion through September. This exceeded the company’s earlier projection of a $2.2 billion EBITDA loss for the full year.

xAI spent nearly $160 million on stock-based compensation through September. The spending reflects intense competition for AI talent in the industry.

The company has integrated its Grok chatbot into X, the social network formerly known as Twitter. Grok is also available in Tesla vehicles.

xAI’s parent company, xAI Holdings, also owns X. SpaceX has invested in xAI, and xAI has spent hundreds of millions on Tesla Megapack batteries.

Tesla shareholders voted in November on whether the company should invest in xAI, but the non-binding proposal did not receive enough votes to pass.

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