Anthropic signals end to $120.5B SpaceX AI compute deal by Q2 2027, Musk says he'll take it back

Anthropic Signals Early Exit from Massive SpaceX Partnership

Anthropics's executives recently communicated to a select group of sell-side analysts that the AI compute deal with SpaceX will not be extended beyond Q2 20271

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. The Anthropic and SpaceX partnership currently stands as one of the industry's largest AI infrastructure financing arrangements, with agreements worth up to $120.5 billion through 20292

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. Starting December 2026, Anthropic pays SpaceX $3.1 billion per month for renting its AI computing capacity1

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. This arrangement has proven highly lucrative for Elon Musk's enterprise, generating nearly a third of SpaceX's revenue in Q3 20261

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Elon Musk Responds with Confidence to Potential Contract Termination

Elon Musk dismissed concerns about losing Anthropic as a client with characteristic nonchalance. "We would be happy to take the compute back. No problem. But I think the opposite is going to happen," Musk wrote on X1

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. His confidence stems from SpaceX's aggressive expansion plans and strong demand for AI computing capacity. The contract includes provisions allowing either company to terminate with 90 days' notice after initial non-cancelable periods expire in early 20272

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. SpaceX described an initial 180-day lease in May, explaining it sought flexibility to reclaim computing capacity if its own demand surged2

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SpaceX's Aggressive Capacity Expansion Plans

SpaceX plans to end 2026 with 2.5-3 GW of capacity and add another 13 GW by the end of 2027, bringing total capacity to around 20 GW1

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. The company's 2027 CapEx for compute-related infrastructure alone is expected to surge to $390 billion, calculated at $30 billion per GW1

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. This massive investment positions SpaceX to capitalize on potential compute scarcity. Venture capitalist Chamath Palihapitiya recently suggested that if AI computing capacity becomes incrementally more scarce, SpaceX could issue a 90-day notice to Anthropic and raise prices two to three times1

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. Anthropic appears to be preempting this scenario by taking the initiative to exit first.

Anthropic's Financial Pressures and Slowing Growth

Anthropics's IPO filing disclosed approximately $895.4 billion in commitments, primarily for computing infrastructure, with $447.5 billion expected before 2031 and $69.8 billion due within 12 months of September 302

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. The company's third-quarter revenue growth showed signs of deceleration, increasing 47% sequentially to $16.96 billion, down from 144% growth in the preceding quarter2

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. This slowing revenue growth against massive infrastructure commitments raises questions about the sustainability of Anthropic's spending trajectory. The filing warned that long-term commitments could leave the company paying for underutilized infrastructure if demand fails to meet expectations2

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Broader Implications for AI Infrastructure Financing

Banks and investors are increasingly scrutinizing AI infrastructure financing, particularly customer cancellation rights and risks of weaker demand2

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. The potential dissolution of the Anthropic and SpaceX partnership highlights growing tensions in the AI compute market between providers making massive CapEx investments and customers facing uncertain demand trajectories. SpaceX maintains diversification through other deals, including a $920 million-per-month agreement with Google spanning 110,000 NVIDIA GPUs, CPUs, memory, and other related components1

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. This positions SpaceX to absorb the loss of Anthropic more easily than Anthropic can replace such massive computing capacity. The coming months will reveal whether Musk's confidence in continued strong demand proves accurate or whether Anthropic's caution about overcommitment reflects emerging market realities.