Microsoft on Tuesday released Phi-4-reasoning-vision-15B, a compact open-weight multimodal AI model that the company says matches or exceeds the performance of systems many times its size — while consuming a fraction of the compute and training data. The release marks the latest and most technically ambitious chapter in the software giant's year-long campaign to prove that carefully engineered small models can compete with, and in key areas outperform, the industry's largest AI systems.The 15-bi...