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Microsoft Replaces OpenAI, Anthropic With Own AI in Some Apps

Microsoft Replaces OpenAI, Anthropic With Own AI in Some Apps
Bloomberg Technology Tuesday 07 July 2026, 16:19 UTC By Brody Ford 1 min read
Key Points

Microsoft Replaces OpenAI, Anthropic With Own AI in Some Apps Microsoft Corp., looking to reduce AI costs, is starting to replace OpenAI and Anthropic with its own models in software products like Excel and Outlook. Tens of thousands of AI prompts in the widely used spreadsheet and email applications are now being completed each week with Microsoft’s internally built MAI models, according to a person familiar with the work. Previously Excel and Outlook relied more heavily on models from...

Microsoft Replaces OpenAI, Anthropic With Own AI in Some Apps Microsoft Corp., looking to reduce AI costs, is starting to replace OpenAI and Anthropic with its own models in software products like Excel and Outlook. Tens of thousands of AI prompts in the widely used spreadsheet and email applications are now being completed each week with Microsoft’s internally built MAI models, according to a person familiar with the work. Previously Excel and Outlook relied more heavily on models from OpenAI and Anthropic, said the person, who was granted anonymity to discuss an internal matter. [Image text:] DAL Microsoft LIMITE N
Microsoft (ORG) Apps Microsoft Corp. (ORG) AI (ORG) MAI (ORG) Outlook (PERSON)
Originally published by Bloomberg Technology Read original →

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