Microsoft Decision-1: 9B Qwen Model Launch Explained

Microsoft introduced the Microsoft-Decision-1 model, a narrow AI model that scores answer options and returns a probability score, unlike general-purpose chatbots. It's built on top of Alibaba's Qwen3.5-9B and available through Microsoft Foundry and OpenRouter. The model is designed for specific use cases such as routing, classification, and verification, and is already being used internally by Microsoft for incident response and scientific discovery.