Analysis
Anthropic has launched Theseus Infrastructure, a new platform backed by Macquarie Asset Management and Singapore's sovereign wealth fund GIC that will develop, own and lease dedicated data center capacity to Anthropic under long-term agreements, according to Bloomberg. Macquarie and GIC will fund the majority of the equity for each site and jointly own the platform, with Anthropic serving as anchor tenant rather than owner -- a structure that keeps the capital-intensive construction cost off Anthropic's own balance sheet while still guaranteeing it dedicated capacity.
The arrangement mirrors, almost exactly, the financing structure Nvidia used days later to back OpenAI's $105 billion Ohio data center with SB Energy: a specialist infrastructure investor takes on construction financing and ownership risk, while the AI lab locks in a long-term lease it can point to as proof of future compute supply without carrying the debt. Pulse has covered Anthropic's revenue acceleration extensively this year; Theseus is the infrastructure half of that story, built to keep pace with a company whose annualized run rate reportedly climbed to $65 billion in July.
“OpenAI has Stargate and the new Nvidia-backed Ohio site; Anthropic now has Theseus; xAI leans on SpaceX's balance sheet.”
Anthropic's move to build dedicated capacity, rather than relying exclusively on Amazon Web Services and Google Cloud, is a notable evolution given both companies are also major Anthropic investors -- Amazon has committed roughly $8 billion and Google around $3 billion to the company across multiple rounds. Theseus does not replace those relationships, but it gives Anthropic a third compute channel it fully controls the terms of, reducing dependence on any single hyperscaler's own capacity constraints and pricing.
The competitive read is straightforward: every frontier lab is racing to lock in power and compute years ahead of when models will actually use it, because interconnection queues and construction timelines now run longer than product roadmaps. OpenAI has Stargate and the new Nvidia-backed Ohio site; Anthropic now has Theseus; xAI leans on SpaceX's balance sheet. The lab that runs out of committed compute first is the one that can't ship its next model on schedule, which makes infrastructure deals like this one as strategically important as any model release. Sovereign wealth funds like GIC and infrastructure managers like Macquarie are increasingly the counterparties in these arrangements rather than traditional venture or private equity firms, because the return profile -- long-duration, contracted, asset-backed -- fits their mandates far better than a typical AI equity round does.
What the deal doesn't disclose is dollar figures -- neither the size of Macquarie and GIC's equity commitment nor the specific capacity Anthropic has agreed to lease has been made public, which makes it hard to size Theseus against Nvidia's explicit $105 billion Ohio backstop. Until Anthropic's IPO filing becomes public and discloses its infrastructure lease obligations, the real scale of this commitment -- and what it implies about Anthropic's multi-year compute spend -- remains an estimate rather than a verified number. Investors modeling Anthropic's prospective $2 trillion-plus IPO valuation will need that lease schedule to judge how much of the company's future revenue is already spoken for before a single new dollar of profit shows up.
