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This article applies to Copilot+ PCs only. |
Introduction
The Phi Silica AI component is a Transformer-based local language model. As Microsoft's most powerful neural processing unit (NPU)-tuned local language model, Phi Silica is optimized for efficiency and performance on Windows Copilot+ PCs while still offering many of the capabilities found in Large Language Models (LLMs).
Summary
This Phi Silica update is a new release for the Phi Silica AI component for Windows 11, version 24H2.
How to get this update
Windows Update
This update will be downloaded and installed automatically from Windows Update.
Prerequisites
You must have the latest cumulative update for Windows 11, version 24H2 installed.
Replacement information
This update does not replace any previously released update. This is a new release.
Check update history
To determine whether this update is present on the device, go to Settings > Windows Update > Update history.
After this update is installed, you should find one of the following updates listed in Update history depending on the processor type in the device:
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2025-05 Phi Silica version 1.2505.838.0 for AMD-powered systems (KB5061858)
References
Description of the standard terminology that is used to describe Microsoft software updates
