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Phi-4-reasoning-vision-15B: Adaptive Multimodal Reasoning
Microsoft released Phi-4-reasoning-vision-15B, an open-weight multimodal reasoning model using mid-fusion architecture (SigLIP-2 vision encoder + Phi-4-Reasoning backbone). Trained on ~200B tokens of multimodal data. Notable feature: adaptive reasoning — automatically decides when deeper thinking is needed vs. responding immediately. Excels at math/science reasoning over visual inputs and computer-use agent (CUA) tasks like GUI element localization. Available on HuggingFace, Microsoft Foundry, a
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