Microsoft is announcing a strategic partnership with Anthropic today that will bring the AI startup’s models to Microsoft Foundry for the first time. As part of the deal, Anthropic is also committing to purchasing $30 billion of Azure compute capacity and “to contract additional compute capacity up to one gigawatt.”

Microsoft Foundry customers will now be able to access Anthropic’s frontier Claude models including Claude Sonnet 4.5, Claude Opus 4.1, and Claude Haiku 4.5. Despite these models coming to Microsoft’s AI servers, Amazon will still remain Anthropic’s primary cloud provider and training partner.

Nvidia and Anthropic are also partnering today as part of this deal, to optimize Anthropic’s models for the best performance on future Nvidia architectures. Anthropic is committing to u

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