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OpenAI says GPT 5.6 is the 'preferred model' for Microsoft Copilot 365 amid breakup chatter
OpenAI has launched GPT 5.6, declaring it the 'preferred model' for Microsoft 365 Copilot, a decision made amidst speculation of a strained relationship between the two organizations. Recently, reports indicated that Microsoft was substituting some OpenAI models with its in-house alternatives, known as MAI, to control costs within applications like Word and Excel. However, OpenAI’s announcement aims to clarify that its software will still be integral in powering Microsoft’s productivity tools. While the impact of the 'preferred model' designation remains somewhat ambiguous, the partnership appears steadfast as both companies continue to emphasize their collaborative objectives in advancing AI technology.
MonitorConfidence: MediumShort term horizon
Published 10 Jul 2026, 00:40 UTC1 min read
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Summary
TL;DR
- OpenAI launches GPT 5.6 as the preferred model for Microsoft 365 Copilot
- Announcement comes amid reports of Microsoft shifting to in-house models
- OpenAI emphasizes ongoing partnership with Microsoft
- GPT 5.6 will support Microsoft apps like Word and Excel
- Clarification aims to dispel rumors of a split between the two companies
Interesting facts
- The term 'preferred model' leaves some ambiguity about integration details
- Reports suggested Microsoft was increasingly adopting its own AI models
- OpenAI's partnership with Microsoft dates back several years, evolving with AI advancements