Phi-4 Reasoning

Big Reasoning Power, Small Models

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Small open-weight models (3.8B/14B) delivering powerful reasoning for math/science/code, rivaling larger LLMs. Available on Azure AI Foundry & HF.

Phi-4 Reasoning

Launch date
Phi-4-reasoning-visionOpen-weight 15B multimodal model for thinking and GUI agents

Launched on March 9th, 2026

Phi-4 ReasoningBig reasoning power, small models

Launched on May 3rd, 2025