OpenAI has announced that its latest artificial intelligence model, GPT-5.6, will become the preferred model powering Microsoft 365 Copilot, reaffirming the long-standing partnership between the two technology companies.

The announcement comes amid recent reports suggesting Microsoft was increasingly relying on internally developed AI models to reduce operational costs.

According to OpenAI, GPT-5.6 will support AI features across Microsoft 365 applications, including Word, Excel, PowerPoint and other productivity tools.

The company described the move as part of its continued collaboration with Microsoft to deliver advanced AI capabilities to businesses and individual users worldwide.

Recent media reports had indicated that Microsoft was integrating its own AI models into several software products as part of a broader strategy to reduce dependence on external technologies.

While those reports sparked speculation about the future of the OpenAI-Microsoft relationship, OpenAI’s latest announcement suggests the partnership remains active and strategically important.

Although OpenAI described GPT-5.6 as the preferred model for Microsoft 365 Copilot, the company did not provide detailed information on how responsibilities will be shared between its technology and Microsoft’s in-house AI systems.

Industry observers believe Microsoft will continue combining both internal and external AI solutions depending on the specific needs of its products.
The latest development reinforces the close relationship between the two companies as competition in the artificial intelligence industry continues to intensify.

Their collaboration remains one of the most influential partnerships shaping the future of AI-powered workplace productivity.

Source: TechCrunch