Microsoft has decided not to expand its agreement with UK-based AI infrastructure company Nscale, walking away from a potential deal worth tens of billions of dollars at a moment of growing scrutiny over Big Tech’s AI spending.
Key Points
- Microsoft will not exercise an option to more than double its existing agreement with Nscale to rent computing capacity at a Texas data centre.
- The decision was first reported by the Financial Times and confirmed by Reuters on Thursday.
- Nscale’s total contract value remains about $103 billion, and it is in talks with other customers for the remaining Texas capacity.
- Nscale is also reported to be in discussions with Anthropic over a deal worth nearly $45 billion.
Microsoft and Nscale struck an agreement last year under which the UK-based company would deploy around 200,000 Nvidia AI chips across data centres in the United States and Europe. Nscale disclosed in its IPO filing that it signed statements of work with Microsoft between September 2025 and April 2026, worth up to approximately $43.8 billion through December 2033.
The decision not to expand the Texas agreement comes as demand for computing infrastructure continues to rise amid growing AI investment — but also as investors ask harder questions about how much the hyperscalers are spending, and how quickly that spending will pay off. Just last week, US tech stocks dropped amid concerns over AI spending, and chip stocks have been volatile all autumn.
Nscale looks elsewhere
Despite Microsoft’s decision, Nscale’s total contract value remains unchanged at approximately $103 billion, according to a person familiar with the matter. The company is already in discussions with several major customers to use the remaining capacity at its Texas data centre.
One of those customers could be Anthropic, the company behind the Claude AI assistant. Reuters and other media outlets reported last month that Nscale was in discussions to supply AI computing capacity to Anthropic in a proposed agreement that could be worth nearly $45 billion. Anthropic’s revenue has surged more than 1,100% as the AI giant nears a blockbuster stock market listing, and its appetite for computing power is enormous.
The episode also fits a wider pattern: the AI boom is redirecting semiconductor supply toward data centres and away from smartphones and PCs, constraining other end markets, according to the head of wafer maker Siltronic. AI server farms now consume roughly three to four times more silicon area than traditional servers.
What happens next
Microsoft has not publicly explained its decision, and the Financial Times report did not say whether the company expects to revisit the expansion later. For Nscale, the test is whether it can fill the Texas capacity with other customers at similar terms. For the wider market, the walk-away is a reminder that even in an AI gold rush, the biggest buyers are starting to pick their bets — and that scrutiny of AI spending is now a market-moving force in its own right.
Sources
- Financial Times via Reuters, reported by Analytics Insight — https://www.analyticsinsight.net/news/microsoft-rejects-multibillion-dollar-ai-deal-with-uks-nscale-report
- Reuters (Anthropic talks, context)