Overview
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Introducing Phi-3, a family of small open models developed by Microsoft, designed to redefine what is possible with small language models (SLMs).
High-quality training data
Phi-3 models are trained using high-quality data, ensuring they are ready to use out-of-the-box.
Instruction-tuned
Phi-3 models are instruction-tuned, meaning they are trained to follow different types of instructions reflecting how people normally communicate.
Safety-first model design
Phi-3 models were developed in accordance with the Microsoft Responsible AI Standard, ensuring they are responsibly developed, tested, and deployed.
Editorial note
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Record updated: Sep 20, 2026
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