- Theseus Infrastructure will develop, operate and lease data center infrastructure to Anthropic under long-term agreements. [1] - The platform’s initial development focus is the United States, with Anthropic serving as anchor tenant at new sites. [1] - GIC and funds managed by Macquarie will own Theseus and fund the majority of equity for each project. [1] - The companies disclosed no locations, power capacity, construction schedule or total investment. [1] - Anthropic separately announced a $50 billion US computing-infrastructure investment in November 2025, including sites in Texas and New York.
[2] GIC, Macquarie Asset Management and Anthropic have formed Theseus Infrastructure, a platform that will develop, operate and lease purpose-built data centers for Anthropic under long-term agreements. The initial focus will be the United States, with Anthropic as the anchor tenant for facilities developed through the platform. [1]
GIC and funds managed by Macquarie will own Theseus and provide most of the equity for each project. The announcement did not disclose the first sites, power capacity, project timelines or total capital commitment. [1]
The platform adds a dedicated development vehicle to Anthropic’s expanding mix of owned, leased and cloud-based compute capacity. In November 2025, Anthropic announced a $50 billion investment in American computing infrastructure, with initial projects planned in Texas and New York. [2]
The Deal Terms #
Theseus will identify sites, develop facilities and lease the resulting infrastructure to Anthropic under long-term contracts. The facilities will be purpose-built to support Anthropic’s capacity needs, according to the announcement. [1]
GIC and Macquarie-managed funds will own the platform and fund most of the equity at the project level. The parties did not disclose their ownership split or the financing structure for future developments. [1]
Anthropic’s US Buildout #
Anthropic announced on November 12, 2025, that it would invest $50 billion in American computing infrastructure and build data centers with Fluidstack in Texas and New York, with more sites to come. The company said those facilities would be custom-built for its workloads. [2]
The Theseus announcement does not identify whether the platform’s initial sites will be separate from, or connected to, Anthropic’s previously announced Fluidstack projects. [1][2]
What Remains Undisclosed #
The companies did not identify Theseus’s first sites, utility partners, power procurement arrangements, expected delivery dates or project-level capital requirements. Those details will determine the platform’s initial construction pipeline. [1]
Companies mentioned #
Further sources #
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