06/10/2026
Anthropic is paying Elon Musk $1.25 billion every month.
SpaceX's IPO S-1 filing revealed it: Anthropic signed a deal to rent the entire output of xAI's Colossus 1 data center through May 2029.
$1.25 billion per month.
$15 billion per year.
For compute.
Annualized, this single customer relationship is worth more than the GDP of 70 countries.
Why? Anthropic can't train Claude Opus 4.8 and future models on laptops. It needs H100 and GB200 clusters at a scale that only a handful of facilities on Earth can provide. Colossus 1 is one of them.
The dependency gets more ironic: Elon Musk owns xAI. xAI builds Grok -- Claude's direct competitor. And Claude's biggest operational expense is paid to Grok's parent company.
Anthropic is also expanding to Colossus 2, scaling GB200 capacity through June.
The 90-day termination clause is the only exit. After the initial 3-month period, either party can exit with 90 days' notice.
Elon Musk's response? "Short-term. Because we might need the compute back."
Source: TechCrunch / Axios / SpaceX S-1 Filing
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*Source: techcrunch.com*