Fluidstack

Fluidstack is a GPUaaS provider that is partnering with Anthropic to operate AI datacenters for Anthropic’s exclusive use.

Fluidstack’s role in the AI stack seems a bit tricky. For example, as part of their partnership with Anthropic…¹

• They lease land and power from a third party (e.g., Hut 8, TeraWulf, Cipher Mining)
• The third party develops the land and builds the datacenter
• Fluidstack deploys and operates the accelerators, networks, and storage within each datacenter(?)
• Anthropic runs its workloads on Fluidstack’s infrastructure
• Google agrees to bail out Fluidstack if Fluidstack cannot honor its lease terms over time

So it seems like Fluidstack buffers Anthropic from owning land, signing power agreements, and managing physical infrastructure.

Scale

Fluidstack is deploying tens of billions of dollars of Google TPUs as part of a $50B partnership between Anthropic and Fluidstack.² Specifically,

From Amazon and Google Eat Into Nvidia’s A.I. Chip Supremacy - The New York Times

Google’s chip business began to turn heads in December when Broadcom’s chief executive, Hock Tan, said that the company had sold $10billioninGooglechipstoAnthropicandthattheA.I.start-uphadplacedasecondorderfor$11 billion.

Anthropic is installing these chips in data centers it is building with a company called Fluidstack, the three people familiar with the projects said. As Fluidstack takes on debt to build these data centers, Google is also backstopping the deal, meaning it has agreed to repay the debt if Fluidstack is unable to, the people said.

Locations

Here is a summary of notable locations where Fluidstack may be or will be developing:¹

Site Name	Location	Power (MW)	Anthropic-Tied	Additional Notes
River Bend	West Feliciana Parish, Louisiana	245 MW initial (up to 1,245 MW with expansion)	Confirmed	$7B 15-year lease with Hut 8. Google backstop. 330 MW utility capacity from Entergy. First data hall Q2 2027. Part of Hut 8/Fluidstack/Anthropic partnership announced Dec 2025.
Lake Mariner CB-3 & CB-4	Somerset, Western New York (former coal plant site)	200 MW (40 MW + 160 MW)	Speculated	$3.7B10-yearleasewithTeraWulf($8.7B with extensions). Google $1.8Bbackstop+8$50B Anthropic NY sites.
Lake Mariner CB-5	Somerset, Western New York	160 MW	Speculated	TeraWulf expansion exercised Aug 2025. Total Lake Mariner: 360 MW. Google backstop increased to $3.2B+14$50B Anthropic NY sites.
Abernathy	Abernathy, Texas (Hale/Lubbock Counties)	168 MW critical IT (240 MW gross)	Speculated	$9.5B25-yearJVwithTeraWulf(51$1.3B backstop. Online H2 2026. Likely candidate for $50B Anthropic TX site.
Barber Lake	Colorado City, Texas	168 MW critical IT (244 MW gross) initial, expanding to 300 MW	Speculated	$3B10-yearleasewithCipherMining($7B with extensions). Google $1.4Bbackstop+5.4$50B Anthropic TX site.
France Supercomputer	France (Bruyères-le-Châtel, Essonne for Mistral portion)	1 GW	No	€10B ($10.36B) MoU with French government. Carbon-free nuclear energy. Phase 1 operational 2026, scaling beyond 1 GW by 2028. Mistral AI customer confirmed. Separate from Anthropic.
Anthropic Custom Sites (unspecified)	Texas and New York (specific locations not disclosed)	Gigawatts (exact MW unspecified)	Confirmed	$50B partnership announced Nov 2025. 800 permanent jobs + 2,400 construction jobs. Sites online throughout 2026. Could overlap with TeraWulf/Cipher sites above or be entirely new.

Footnotes

1. Hut 8 signs 245MW capacity deal with Fluidstack as part of multi-gigawatt partnership with Anthropic - DCD ↩ ↩²

2. Anthropic invests $50 billion in American AI infrastructure \ Anthropic ↩