Microsoft Phi 是微軟的小型開源語言模型系列（Phi-3、Phi-4）。專為效率和設備端部署設計，在推理、程式設計和數學方面表現出色，遠超同體量模型水準。
Microsoft Phi is a family of small, open-source language models (Phi-3, Phi-4) designed for efficiency and on-device deployment. Excels in reasoning, coding, and math despite compact size.