Microsoft is replacing AI models from OpenAI and Anthropic with its own MAI models in products like Excel and Outlook. Tens of thousands of queries per week already run through them. AI chief Mustafa Suleyman wants to "ultimately eliminate" the cost of external models. For Copilot customers, that could mean less performance for the same price.

Microsoft replaces OpenAI and Anthropic AI with its own models. Anthropic's valuation hitting $1.25T by December 31 at 90.5% YES.

Microsoft is routing some app features to its in-house MAI models instead of OpenAI and Anthropic, chipping away at its reliance on partners.