Fluidstack Closes $1.5B at $18B Valuation as It Builds Anthropic's Custom TPU Campuses
Fluidstack has closed a $1.5B funding round led by Jane Street at a valuation above $18B, as the company builds the custom TPU data center infrastructure behind Anthropic’s $50B infrastructure commitment.
The November 2025 Anthropic deal — for custom facilities in Texas and New York — established Fluidstack as a rare animal in the AI compute stack: a large-scale TPU data center builder with a Google endorsement that is not Google itself.
The TPU Operator Gap
Google TPUs have historically been a closed ecosystem. Google builds them, Google operates them, and external access comes via Google Cloud rather than through independently run hardware. Fluidstack’s role in the Anthropic build changes that structure in practice: the company is constructing data centers designed to run Google TPUs at scale for a customer that is neither Google nor a Google Cloud tenant.
Google provided credit backstops covering roughly $1.8B of Fluidstack’s lease obligations, giving the company the financial infrastructure to take on contracts the size of Anthropic’s commitment. The backing also gives Fluidstack operational relationships with Google’s TPU supply chain that independent data center operators do not have.
The Anthropic facilities in Texas and New York are still under construction. When complete, they are expected to host TPU clusters at a scale not previously operated outside Google.
The Speed Claim
Fluidstack’s investor materials claim a 3-month data center construction timeline, against a year or more for Google, Amazon, or Meta. The company attributes this to a simplified design philosophy that prioritises construction speed over flexibility, drawing comparison to xAI’s Colossus build in Memphis, Tennessee, which compressed a similar timeline through stripped-down architecture.
The claim is unverified at the scale Anthropic requires. Fluidstack’s completed projects to date are smaller. The Texas and New York campuses will be the stress test.
The Crypto-to-AI Pipeline
Fluidstack has also executed multi-billion-dollar transactions to repurpose power and site infrastructure from cryptocurrency miners — including TeraWulf and Hut 8 — into AI training capacity. Mining facilities carry power infrastructure already built for high-density compute loads. As mining economics have shifted, that capacity has migrated into AI inference and training.
The pattern mirrors what other infrastructure aggregators have done with distressed mining assets, but Fluidstack’s TPU mandate and Google credit relationship distinguish it from generic compute brokers.
The Institutional Fabric
Blackstone’s existing $5B joint venture with Google on TPU data center capacity adds another institutional layer to the same infrastructure story. The combination of Blackstone, Fluidstack, Jane Street, and Google backing represents a significant concentration of private capital behind TPU commercialisation outside Google Cloud.
If Fluidstack delivers on the Anthropic timeline, it becomes one of the dominant non-hyperscaler AI infrastructure operators in the market. The bottleneck for Anthropic’s compute roadmap currently sits at the construction layer.