---
title: "Microsoft's stock price rises as self-developed AI models replace third-party solutions to reduce Copilot costs"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/291963828.md"
description: "Microsoft's stock price rose 1.75% on Tuesday, outperforming the Nasdaq index. According to Bloomberg, Microsoft is quietly replacing third-party AI services like OpenAI with its self-developed MAI model, which has been deployed in Excel and Outlook to handle a large number of prompt commands. This move aims to significantly reduce artificial intelligence infrastructure costs and marks an important evolution in its AI strategy"
datetime: "2026-07-07T17:34:57.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/291963828.md)
  - [en](https://longbridge.com/en/news/291963828.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/291963828.md)
---

# Microsoft's stock price rises as self-developed AI models replace third-party solutions to reduce Copilot costs

Investing.com - Microsoft (NASDAQ:MSFT) shares rose 1.75% on Tuesday, outperforming the weak Nasdaq index. According to reports, the tech giant is quietly abandoning expensive third-party AI models in favor of its own developed technology.

According to Bloomberg, Microsoft has discreetly deployed its latest self-developed MAI model directly into Excel and Outlook applications. An anonymous source familiar with the matter revealed that this behind-the-scenes technology replacement has been processing tens of thousands of AI prompt commands weekly in the aforementioned spreadsheet and email applications.

Microsoft's core office applications had previously relied heavily on external AI pioneers such as OpenAI and Anthropic, and this is the first time the scale of its self-developed MAI model deployment has been revealed. This strategic shift marks an important evolution in Microsoft's AI layout: while striving to keep its core software suite running at full speed, it is actively working to significantly reduce the enormous infrastructure costs of artificial intelligence.

_This article was translated with the assistance of artificial intelligence. For more information, please refer to our terms of use._

### Related Stocks

- [MSFT.US](https://longbridge.com/en/quote/MSFT.US.md)
- [MSFL.US](https://longbridge.com/en/quote/MSFL.US.md)
- [MSFU.US](https://longbridge.com/en/quote/MSFU.US.md)
- [MSFD.US](https://longbridge.com/en/quote/MSFD.US.md)
- [MSFO.US](https://longbridge.com/en/quote/MSFO.US.md)
- [MSFX.US](https://longbridge.com/en/quote/MSFX.US.md)
- [MSFW.US](https://longbridge.com/en/quote/MSFW.US.md)
- [MSFY.US](https://longbridge.com/en/quote/MSFY.US.md)
- [MAGX.US](https://longbridge.com/en/quote/MAGX.US.md)
- [.IXIC.US](https://longbridge.com/en/quote/.IXIC.US.md)
- [OpenAI.NA](https://longbridge.com/en/quote/OpenAI.NA.md)

## Related News & Research

- ['A Change Is Coming,' Says Gil Luria About Microsoft Stock](https://longbridge.com/en/news/291852861.md)
- [Microsoft Is Letting Go Employees Amid AI Investments And Xbox Restructuring](https://longbridge.com/en/news/291845965.md)
- [Microsoft cuts 4,800 jobs across sales and Xbox. Read the memo.](https://longbridge.com/en/news/291811857.md)
- [Microsoft's Xbox cuts 1,600 employees, with plans to shed 20% of its workforce this year](https://longbridge.com/en/news/291811836.md)
- [Microsoft Cuts 4,800 Jobs As It Restructures Video Game Unit](https://longbridge.com/en/news/291961010.md)