en.Wedoany.com Reported - Microsoft (MS) is gradually reducing its reliance on OpenAI and Anthropic models in its core office software by expanding the application of its own AI model, "MAI." This move aims to cut the operating costs of AI services and enhance the competitiveness of its internal models.

According to Bloomberg on the 8th local time, Microsoft has deployed the MAI model in Excel and Outlook, replacing the previously dominant OpenAI and Anthropic models. Currently, tens of thousands of AI prompts are processed through the MAI model each week in these two services. Although the company previously relied heavily on third-party models, Microsoft is gradually increasing the proportion of its own models, though it has not disclosed the specific scale of application.

This move is seen as a cost control strategy. Microsoft's main office AI assistants, such as Copilot, use a large number of AI tokens and currently benefit from a relatively low-cost model supply based on a long-term partnership with OpenAI. To prepare for potential future increases in AI model usage fees, Microsoft is simultaneously advancing the competitiveness of its own models to minimize the impact of pricing policy changes by external AI companies and to control long-term AI infrastructure costs.

At last month's annual developer conference, "Build," Microsoft released seven new AI models and announced plans to expand its own model ecosystem. Some of these models can achieve coding performance comparable to Anthropic's previous-generation representative model, "Opus 4.6," at a lower cost. The application scope of the MAI model is expanding; GitHub Copilot already supports the MAI model, and Microsoft Teams' voice features and other services will also gradually deploy its own AI models.

Microsoft stated that expanding its own AI models does not mean ending cooperation with external AI companies. Its goal is to increase the proportion of its own models in core office services over the long term while achieving cost efficiency and technological competitiveness. Mustafa Suleyman, CEO of Microsoft's AI division, said at the Build conference: "We pay a high price to Anthropic, and our goal is to reduce these expenses and eventually eliminate them."