Microsoft Ditches OpenAI and Anthropic for Its Own MAI Models in Excel and Outlook to Cut AI Costs

Microsoft is ditching OpenAI and Anthropic AI models in favor of its own proprietary MAI models inside Excel and Outlook, completing tens of thousands of prompts weekly as the tech giant slashes costs and bets big on in-house artificial intelligence.

• Microsoft is replacing OpenAI and Anthropic models with its own internally built MAI models in popular apps like Excel and Outlook to reduce AI costs.
• Tens of thousands of AI prompts in Excel and Outlook are now being completed each week using Microsoft's proprietary MAI models.
• The shift marks a significant move away from third-party AI dependencies as Microsoft increasingly bets on its own in-house artificial intelligence capabilities.