Earlier this month, Anthropic surprised the AI world with a deal to buy 300 megawatts’ worth of compute, securing the entire output of the Colossus 1 data center near Memphis, Tennessee.
Turns out, compute at that scale carries a staggering price tag. Anthropic will be paying xAI $1.25 billion per month through May 2029, with a discounted rate for the first two months as xAI completes its infrastructure ramp-up. All told, the deal is projected to bring xAI over $40 billion in revenue.
Details of the massive transaction emerged from SpaceX’s S-1 filing with the SEC. The deal, the company noted, "allows us to monetize unused compute capacity in our infrastructure." The terms of the agreement allow either side to terminate the contract with a 90-day notice. "We expect to enter into additional similar services contracts," the filing stated.
The move has carved out a hybrid stance for xAI in the AI market. Most players either build data centers exclusively for themselves or build them for others to use; rarely do they do both simultaneously. This emerging model, often referred to as a "neocloud," lets AI companies offset immense infrastructure costs by acting as a cloud provider when their own consumption falls short of capacity.
SpaceX argues the arrangement is a savvy use of resources. "We believe our dual monetization strategy provides multiple pathways to generate returns on invested capital," the company wrote. However, the subtext is hard to miss: xAI appears to have overbuilt its compute capacity and needed to find a way to monetize it ahead of a public offering. Usage of Grok, xAI’s flagship AI assistant, has dropped significantly in recent months, freeing up servers that the company is now selling to one of its closest rivals.
[AgentUpdate Depth Analysis] This monumental deal signals that compute is rapidly maturing into a highly liquid commodity in the AI Agent era. For Anthropic, scaling its Claude models for complex agentic workflows and computer-use tasks demands unprecedented training and real-time inference capacity. By leasing Colossus 1, Anthropic bypasses the long cycles of datacenter construction to fuel its upcoming multi-agent systems. Conversely, xAI's "neocloud" pivot reveals a structural mismatch between overbuilt hardware and slowing consumer-facing adoption for apps like Grok. Ultimately, the future of the AI Agent ecosystem is shifting from pure algorithmic competition to dynamic infrastructure arbitrage, where the winners will be those who can optimize elastic compute costs at hyperscale.
