Anthropic locked $45 billion in compute capacity from Nscale over six years, the largest single infrastructure contract signed by a frontier AI lab. The lease covers 460 megawatts of GPU power in West Virginia, equivalent to roughly 300,000 H100-class chips running continuously. No equity stake exchanged hands. The contract is pure rental.
The deal structure is monthly lease payments indexed to utilization, not capital expenditure. Anthropic pays for power consumed, cooling, and rack space. Nscale retains hardware ownership and depreciation risk. The average burn rate works out to $625 million per month over the contract term. That is 2.5 times Anthropic's estimated current quarterly inference cost and signals a material step-up in model training cadence. Claude 4 training runs are expected to begin in Q2 2025. This contract underwrites at least two full-scale training cycles and the inference load from widespread enterprise deployments.
The timing matters. Anthropic raised $4 billion from Amazon in September 2024 and another $2 billion from Google in November. Those rounds priced the company at $18 billion post-money. This compute commitment is 2.5 times the valuation. It is also 150 percent of trailing twelve-month revenue, which Anthropic does not disclose but allocators estimate at $30 billion annualized through December 2024. The West Virginia site is one of three Nscale facilities. The other two are in Oregon and Texas. Anthropic now controls more than half of Nscale's total U.S. capacity.
The implications extend beyond Anthropic. The $45 billion lease establishes a floor price for compute in six-year contracts. Other labs—OpenAI, Google DeepMind, xAI—now negotiate against this benchmark. It also removes 460 megawatts from the spot market, tightening supply for smaller model shops and research labs. Nscale is not a household name. The firm was founded in 2023 by former Equinix engineers and backed by $1.2 billion from Brookfield Infrastructure and Mubadala. It builds purpose-designed data centers for AI workloads with liquid cooling and high-density racks. The West Virginia facility went live in November 2024. Anthropic is its anchor tenant.
Operators should track three follow-on events. First, Anthropic's enterprise contract announcements in Q1 2025. The company needs to convert inference demand into locked revenue to justify this burn rate. Second, Nscale's financing activity. A $45 billion lease commitment makes the firm a credible IPO candidate by mid-2026. Third, competing compute contracts from OpenAI and xAI. Both are expected to announce multi-year leases before June 2025. Anthropic's move forces their hand.
The West Virginia site uses coal-plant-adjacent power purchase agreements. Anthropic did not disclose carbon offset provisions. The facility draws from the PJM Interconnection grid, which sources 30 percent of its power from natural gas and 18 percent from coal. Inference load begins ramping in March 2025.