Microsoft opens Decision-1 in Foundry and OpenRouter

Microsoft on Oct. 9, 2026 introduced Microsoft-Decision-1, a decision-scoring model now listed in Microsoft Foundry and on OpenRouter. The model is post-trained from Qwen3.5-9B and returns calibrated probabilities for fixed yes/no, multiple-choice, and rating options rather than generating open-ended text. Microsoft prices input tokens at $0.042 per million, with output tokens free, and says it will rebase the system on Microsoft AI and OpenAI models. Latency and accuracy figures in the announcement are company-reported.