Microsoft has rolled out GPT-5.6 as the default model powering its 365 Copilot assistant, marking a significant upgrade to the AI engine behind the company's suite of office tools.
The shift brings enhanced capabilities across Word, Excel, PowerPoint, Chat, and Cowork, with the company emphasizing that the newer model delivers faster performance and improved output quality. Users working in these applications should see more responsive suggestions and better-reasoned assistance with complex tasks.
GPT-5.6 replaces the previous generation model that powered Copilot features, positioning Microsoft to compete more aggressively in the enterprise AI space. The change affects both existing Copilot users and new installations going forward.
The upgrade touches multiple productivity scenarios: drafting and editing in Word, data analysis and formula generation in Excel, design refinement in PowerPoint, and real-time collaboration features in Chat and Cowork. Microsoft's framing emphasizes that the stronger model should reduce friction in daily workflows, allowing users to accomplish more in less time.
Author Emily Chen: "Making GPT-5.6 the standard move is straightforward business for Microsoft, but the real test will be whether the quality improvements justify keeping enterprise customers locked into the 365 ecosystem instead of shopping around."
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