Microsoft releases 'Microsoft-Decision-1,' a decision model for routing, classification and verification, post-trained from Qwen3.5-9B (community report)

What happened

According to GeekNews, Microsoft has released 'Microsoft-Decision-1,' a model for routing, classification, prioritization, verification, and workflow control. It returns a calibrated probability for each of a fixed set of options, so software can use the output directly for decision-making. It was post-trained from Qwen3.5-9B to evaluate the options in a single pass.

Why it matters

Following the OpenAI Decisions API, Liquid AI d1, Musubi PolicyLM, and TypeSafe Jev, Microsoft has now also released a "decision-only" model that does not generate text. A fast, cheap judgment layer in agent workflows is establishing itself as a product category.

Sources

• Community Microsoft-Decision-1, 빠른 의사결정을 위한 Microsoft의 모델 GeekNews

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