Tesla vs SpaceX: Elon Musk’s Two Companies Are Chasing the Same AI Prize. Only One Is Positioned to Win It
Elon Musk is running two separate companies toward the same AI finish line, but their strategies, cash positions, and timelines could not be more different....
Tesla posted $28B in revenue at a 1.4% operating margin while CapEx surged 141% and free cash flow turned negative.
SpaceX already rents compute at a premium through Grok while Tesla builds TerraFab, giving the private company the clear near-term AI advantage.
Polymarket prices Optimus's 2026 release at just 3% and California Robotaxi at 23%, yet TSLA trades at a P/E of 369.
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Tesla ( NASDAQ: TSLA ) just closed a bruising quarter that put its AI ambitions on full display, reporting $28.24B in revenue alongside a 1.4% operating margin. SpaceX, still private, reported its own results in early August. Both Musk companies are chasing the same AI prize from opposite directions: Tesla on the ground, SpaceX in orbit and inside data centers. Only one currently owns the compute.
Tesla's quarter was a spending story. CapEx surged to $5.79B, up 141.81% year over year, and free cash flow flipped to negative $1.09B. CFO Vaibhav Taneja said CapEx will grow for "the next two or three years" across Robotaxi, Optimus, a semiconductor fab, and AI compute. Robotaxi expanded to seven U.S. metros, and active FSD subscriptions reached 1.48 million, up 56% YoY.
SpaceX's AI angle is different. After merging with xAI in February, its Colossus data centers in Memphis became the revenue engine, with the launch business (still only roughly $4 billion) increasingly a side act. SpaceX also committed to building AI infrastructure exclusively on Nvidia, including a Vera Rubin NVL72 variant designed for orbit.
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FSD subscriptions, future Robotaxi fleet
Starlink, Starship, Nvidia-based clusters
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