Overview
Phi-4-reasoning is an open-weight model fine-tuned from Phi-4 with chain-of-thought SFT and reinforcement learning, trained on high-quality synthetic and filtered public-domain data (math, science, coding) plus safety alignment—aimed at delivering strong reasoning in a compact model.
Description
Phi-4-reasoning is a state-of-the-art open-weight reasoning model finetuned from Phi-4 using supervised fine-tuning on a dataset of chain-of-thought traces and reinforcement learning. The supervised fine-tuning dataset includes a blend of synthetic prompts and high-quality filtered data from public domain websites, focused on math, science, and coding skills as well as alignment data for safety and Responsible AI. The goal of this approach was to ensure that small capable models were trained with data focused on high quality and advanced reasoning.
About Microsoft
No company description available.
Location:
Redmond, WA, US
Website:
news.microsoft.com
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Last updated: September 17, 2025