OpenAI: GPT-5.6 to be Integrated into Microsoft 365 Copilot
OpenAI has announced that GPT-5.6 will become the standard model for Microsoft 365 Copilot, affecting Word, Excel, PowerPoint, Chat, and Cowork.

What happened?
On 9 July 2026, OpenAI announced that GPT-5.6 will be established as the preferred AI model within Microsoft 365 Copilot. This integration includes use in programmes such as Word, Excel, PowerPoint, Chat, and Cowork. The decision means that many corporate users will interact with GPT-5.6 directly in their daily workflows.
Key facts
| Modellnamn | GPT-5.6 |
|---|---|
| Integrationsdatum | 9 juli 2026 |
| Berörda applikationer | Word, Excel, PowerPoint, Chat, Cowork |
”OpenAI announced on July 9, 2026 that GPT-5.6 will become the preferred model in Microsoft 365 Copilot across Word, Excel, PowerPoint, Chat, and Cowork.”
Why it matters
The integration of GPT-5.6 as the standard model in Microsoft 365 Copilot shifts model evaluation from traditional benchmarks to actual use cases within enterprise productivity tools. This is a deployment rather than just a model launch, implying that performance assessment of the new model will primarily occur within the various applications of the Microsoft 365 ecosystem.
Who is affected?
This directly affects companies and organisations using Microsoft 365 Copilot, as their workflows in Word, Excel, PowerPoint, and other apps will now be powered by GPT-5.6. AI platform teams within these companies need to test output quality, data access boundaries, administrative controls, logging functions, latency, and cost behaviour in real-world Copilot scenarios.
What else you should know
For AI platform teams, this involves practical work to ensure that model improvements are actually translated into managed productivity workflows.
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