Microsoft Replaces OpenAI and Anthropic Models with Own AI in Excel and Outlook

Microsoft Corp. is replacing AI models from partners OpenAI and Anthropic with its own internally developed MAI models in applications like Excel and Outlook. The strategic shift is aimed at reducing AI costs. Microsoft's MAI models are now handling tens of thousands of prompts weekly in the widely used software, which previously relied more heavily on third-party technology.

Microsoft AI model replacement

• ▪Microsoft Corp. is starting to replace OpenAI and Anthropic models with its own in software products like Excel and Outlook.
• ▪Previously, Excel and Outlook relied more heavily on models from OpenAI and Anthropic.
• ▪The move to replace third-party AI models is driven by a strategy to reduce AI costs.

MAI model deployment

• ▪Microsoft's internally built models are known as MAI models.
• ▪Tens of thousands of AI prompts in Excel and Outlook are now completed each week by Microsoft's MAI models.

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