Anthropic announced today that it has teamed up with Macquarie Asset Management and Singapore’s GIC to create a new company called Theseus Infrastructure. The venture will focus on developing AI data centres initially within the United States [1, 2, 3, 4, 5].
Macquarie and GIC will provide most of the equity funding for each data centre project. Anthropic will cover any increases in electricity costs that arise from operating the facilities [1, 2, 3, 4, 5]. The companies have not revealed specific spending amounts or the scale of the planned data centres [1, 2, 3, 4, 5].
In 2025, Anthropic had announced intentions to invest US$50 billion in custom data centres across multiple US locations, including Texas and New York [1, 2, 3, 4]. The partnership with Macquarie and GIC appears to advance those plans. Anthropic also recently secured a US$35 billion loan, backed by Google, to lease computer chips at five data centres [1, 2, 4].
GIC has been a major financial backer for Anthropic, leading or supporting multiple funding rounds totaling billions: a US$13 billion round in September 2025, a US$30 billion round in early 2026, and a co-led US$65 billion round this year [2, 3].
Anthropic’s AI data centre projects are expected to create thousands of construction jobs and ongoing positions in local communities [3]. Compared to rival OpenAI, Anthropic has secured fewer public partnerships for its data centre efforts [1, 2, 3, 4].
Anthropic is preparing for a potential initial public offering as soon as October 2026, making the timing of the Theseus Infrastructure launch a key step in its scaling strategy [3, 4].
