OpenAI says GPT 5.6 is the ‘preferred model’ for Microsoft Copilot amid breakup chatter
OpenAI has designated its new GPT 5.6 model as the 'preferred' choice for Microsoft 365 Copilot, aiming to dispel rumors of a rift between the two companies. While Microsoft is increasingly using its own in-house models to reduce costs, this announcement confirms that OpenAI's software remains a central component of Microsoft's productivity suite.
Why it matters
The clarification helps stabilize market perceptions of the critical partnership between two of the world's most influential AI companies.
Earlier this week, Bloomberg reported that Microsoft was replacing some of OpenAI’s software with its own in-house models in an effort to cut costs. Those in-house models, known as MAI, were increasingly being used to power apps like Word and Excel, the outlet noted.
The article reports on corporate statements and industry rumors without taking a side, maintaining a neutral tone regarding the business relationship.
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