OpenAI has announced that its GPT 5.6 model will be the preferred choice for powering Microsoft's 365 Copilot. This move comes after recent reports suggested that Microsoft was replacing some of OpenAI's software with its own in-house models to cut costs.
The partnership between OpenAI and Microsoft aims to bring advanced AI benefits to individuals and organizations. OpenAI's GPT 5.6 will support Microsoft users across various productivity apps, including Word, Excel, PowerPoint, and Cowork.

The meaning of 'preferred model' is not entirely clear, but it indicates that OpenAI's software will continue to power Microsoft's apps. This announcement does not seem to contradict previous reports that Microsoft was relying more on its own software to reduce costs.




