The foundation models that power Microsoft’s AI experiences are evolving constantly, becoming more powerful and efficient. In recent months, we’ve received questions from customers about which foundation model or models Microsoft deploys in its Copilot for Microsoft 365 service. 

Today, Copilot for Microsoft 365 uses a combination of foundation models, allowing us to match the specific needs of each feature – e.g., speed, creativity – to the right model.  

We are consistently evaluating and aligning the capabilities of both existing and new foundation models. When we can demonstrate that any model enhances the capabilities of Copilot for Microsoft 365, we will make necessary changes to incorporate that model and improve our customers’ experiences. 

Regardless of the specific foundation model used, we never use your customer data to train those models. Your data is encrypted while it is in transit and at rest and is processed in alignment with the same terms and conditions that apply to all the content your organization generates in our Microsoft 365 services. 

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