Microsoft designated OpenAI’s new GPT-5.6 model family as the preferred choice for Microsoft 365 Copilot. The integration adds advanced AI capabilities to Word, Excel, PowerPoint, and Chat. This update provides users with enhanced reasoning for complex, multi-step tasks.
The upgrade improves the quality of generated content and analysis. The move follows reports that Microsoft was developing internal MAI models to cut costs and partner dependence. Microsoft reaffirms its partnership with OpenAI while continuing to develop in-house capabilities.