Fluidstack Lake Mariner is an AI data center operated by Fluidstack, located in the United States (7725 Lake Rd, Barker, NY 14012). Its compute is used by Anthropic, G42.
The site holds roughly 130,369 H100-equivalents of AI compute. It draws about 100 MW of power. Building and equipping it represents an estimated $3.8B of capital in 2025 dollars. It currently runs B200, TPU v7.
Financing involves Google. These figures are modelled estimates, not disclosures: Epoch AI derives them from permits, satellite imagery and reported spending, with an uncertainty of roughly 1.4x to 1.6x depending on the metric.