Anthropic’s data center push now has big capital backing

How is Anthropic paying for its $50 billion data center buildout?

Anthropic is pairing its AI expansion with infrastructure capital to fund new U.S. data centers.

1. Theseus Infrastructure

Anthropic’s new vehicle with Macquarie Asset Management and GIC is called Theseus Infrastructure, and its job is to push into U.S. data center development. Bloomberg reported the partnership, which is meant to give Anthropic a faster path to the compute it needs for Claude.

The structure matters because it shifts part of the burden away from a single AI company. Instead of Anthropic funding every site itself, the venture brings in infrastructure investors with experience financing large physical assets. That can make it easier to move on land, power, and construction planning at the scale AI now demands.

• Focus: U.S. development
• Partners: Anthropic, Macquarie Asset Management, GIC
• Goal: reduce the cost of building AI-ready capacity

2. Anthropic’s $50 billion buildout

The company said last year it would spend $50 billion to build its own AI data center campuses across the United States. The report says planned sites are expected in Texas and New York, which puts Anthropic in the same capital-intensive race that has defined the AI boom.

That number is the clearest sign that Anthropic is no longer treating compute as a rented utility. It is moving toward owning or co-financing the physical backbone of its model training and inference needs, which can improve control over supply but also raises the stakes on execution.

• Announced spend: $50 billion
• Planned U.S. sites: Texas and New York
• Strategic aim: secure long-term compute supply

3. Macquarie’s data center track record

Macquarie Asset Management is not new to this market. The firm began investing in Aligned Data Centers in 2018 and helped build a portfolio with 70 assets either operating or in the pipeline. That history gives Anthropic a partner that already knows how to assemble, finance, and expand digital infrastructure.

Macquarie’s experience also shows why these partnerships are attractive to AI firms. Data centers are not just real estate, and they are not just power projects. They require financing, engineering, utility coordination, and a long view on demand. Investors that have already worked through those issues can shorten the learning curve.

• Aligned Data Centers involvement: since 2018
• Portfolio size: 70 assets
• Core advantage: infrastructure finance expertise

4. GIC’s role in hyperscale expansion

GIC brings another layer of capital strength. The Singaporean sovereign wealth fund has backed major data center deals before, including an equity investment in Vantage Data Centers’ Asia-Pacific platform. Part of that capital supported Vantage’s acquisition of Sedenak Tech Park in Johor, Malaysia, a hyperscale site developed by Yondr Group.

For Anthropic, that kind of partner matters because hyperscale projects can require enormous upfront spending before revenue catches up. GIC’s history in the sector suggests it is comfortable with long-duration infrastructure bets, especially when the assets sit at the center of a fast-growing cloud and AI market.

• Prior deal: Vantage Data Centers Asia-Pacific platform
• Notable asset: Sedenak Tech Park in Johor, Malaysia
• Investor profile: long-duration sovereign capital

5. The broader AI infrastructure race

Anthropic’s move lands in the middle of a wider contest for compute. OpenAI earlier floated a $500 billion U.S. data center program called Stargate before expanding it abroad. The comparison shows that AI leaders are no longer competing only on model quality, but also on access to power, land, and financing.

The company is also expanding in New York City on the office side, signing a lease for the entire 16-story, 466,000-square-foot building at 330 Hudson Street. That hiring push underscores how quickly Anthropic is scaling across both digital infrastructure and headcount.

• OpenAI benchmark: $500 billion Stargate plan
• Anthropic office lease: 466,000 square feet at 330 Hudson Street
• NYC hiring target: 1,000 employees by year-end

How to decide

If you want the financing angle, Theseus Infrastructure is the key item because it shows how Anthropic plans to spread cost and risk. If you want the scale story, the $50 billion commitment is the headline number that frames the whole effort.

If you care about who makes this possible, Macquarie and GIC are the partners to watch. Their infrastructure and sovereign capital backgrounds explain why Anthropic can pursue a buildout that would be hard for a single AI company to fund alone.