Details
- OpenAI confirms that GPT-5.6, its latest flagship model series, is now the preferred model in Microsoft 365 Copilot across Word, Excel, PowerPoint, Chat, and Cowork.
- The model is designed to deliver more useful work per token, with improved performance per dollar and stronger capabilities for complex tasks in productivity workflows.
- In Word and other content tools, GPT-5.6 aims to reduce the number of prompt iterations needed for drafting, editing, and refining documents, improving writing speed and quality for end users.
- For Excel and data-centric scenarios, GPT-5.6 supports deeper analysis, more accurate summarization, and better handling of multi-step, structured reasoning tasks common in business reporting.
- The shift from earlier GPT-5.x models to GPT-5.6 follows Microsoft’s broader move to keep Copilot aligned with OpenAI’s most capable models, reinforcing their strategic partnership after earlier use of GPT-5.4 in M365.
- Microsoft indicates that GPT-5.6 is available in Microsoft 365 Copilot starting this week, with rollout targeting existing Copilot-enabled tenants so that customers benefit without changing licenses or plans.
- The upgrade continues to run within Microsoft’s enterprise-grade compliance and data protections, meaning tenant data processed through Copilot remains within Azure and is not used to train OpenAI’s models.
Impact
Making GPT-5.6 the preferred model in Microsoft 365 Copilot deepens the OpenAI–Microsoft alignment at a time when enterprises are standardizing on AI assistants inside productivity suites. This upgrade narrows the gap with Google’s Gemini-infused Workspace and other office AI rivals by emphasizing reasoning quality and cost efficiency directly inside tools employees already use daily.
