India, July 10 -- OpenAI says its newly launched GPT-5.6 will become the preferred model powering Microsoft 365 Copilot, reinforcing its partnership with Microsoft amid speculation that the two companies are drifting apart.
The announcement follows reports that Microsoft has begun using some of its own in-house AI models known as MAI to power features in applications such as Word and Excel, partly in an effort to reduce costs. OpenAI said GPT-5.6 will continue to support AI capabilities across Microsoft 365, including Word, Excel, PowerPoint, and Copilot, underscoring the companies' ongoing collaboration.
"Our partnership with Microsoft has always been about bringing the benefits of advanced AI to more individuals and organizations," Open...