Microsoft Research announced the 15 billion parameter open-weight model Phi-4-reasoning-vision-15B on March 4, 2026. The lab says the release is designed to deliver stronger multimodal reasoning, math and science performance, and computer-use ability without the compute profile of much larger systems.
Azure says Phi-4-Reasoning-Vision-15B is now available in Microsoft Foundry. Microsoft positions the 15B model as a compact multimodal system that can switch reasoning on or off for document analysis, chart understanding, and GUI-grounded agent workflows.
A high-engagement LocalLLaMA post on March 4, 2026 discussed Microsoft’s open-weight Phi-4-Reasoning-Vision-15B and focused on practical deployment tradeoffs for local multimodal inference.