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Microsoft to lessen reliance on OpenAI Rebecca Bellan PM PDT · September 9, 2025 Microsoft will pay to use Anthropic’s AI in Office 365 apps, The Information reports, citing two

Microsoft’s move to diversify its AI partnerships comes amid a growing rift with OpenAI, which has pursued its own infrastructure projects as well as a and a potential LinkedIn competitor.

Microsoft’s Anthropic deal also comes as the company negotiates a new deal with OpenAI to secure access to its AI models after a pending for-profit restructuring. But The Information says the move isn’t a negotiating tactic. Leaders at Microsoft believe Anthropic’s latest models – Claude Sonnet 4, specifically – perform better than OpenAI’s in certain functions, like creating aesthetically pleasing PowerPoint presentations.

Meanwhile, OpenAI is also seeking to step out from under Microsoft’s influence. Last week, OpenAI launched a jobs platform to take on Microsoft’s LinkedIn; and The Financial Times reported that OpenAI is set to begin mass production on its first AI chips in partnership with Broadcom in 2026. That means it will be able to potentially run training and inference on hardware it controls, rather than being dependent on Microsoft’s Azure setup. 

TechCrunch has reached out to Microsoft and Anthropic for comment.

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