Anthropic is in early talks with Microsoft to rent its custom AI chips, the Maia series, in a deal that would give the AI startup more compute power and deepen an already cozy relationship. If finalized, Anthropic would become a major customer for Microsoft's Maia 200, which the company began deploying in Azure data centers this January to cut costs for its Copilot AI agents.
Renting custom silicon fits Anthropic's long-standing strategy of using multiple chip types. Unlike OpenAI, which relies almost entirely on Nvidia, Anthropic already rents Google's TPUs and Amazon's custom chips, and is reportedly talking to a British chip startup. Financially, the math is compelling: Anthropic expects nearly $11 billion in revenue and $560 million in operating profit this quarter, but it's committed to at least $330 billion in cloud spending across the three major US providers — including $30 billion to Azure alone. Using cloud vendors' own chips offers customization benefits and could ease the sting of astronomical compute costs through subsidies.
The relationship between Microsoft and Anthropic has been heating up fast. Microsoft invested up to $5 billion in Anthropic late last year and now plans to buy at least $500 million worth of Claude model access to power Copilot. To keep up with Anthropic's surging compute demands, Microsoft has been steadily reallocating resources since November 2025 — moving more existing Nvidia servers to Anthropic and building brand-new server clusters for them. Smaller cloud customers? Their needs are being pushed to the back of the line.