Overview
Microsoft-Decision-1 is a post-trained Qwen3.5-9B decision-scoring model for routing, classification, prioritization, verification, and agent workflow control. It returns calibrated probabilities over fixed option sets via structured API calls.
Key Points
- 2026-10-09: GA on Microsoft Foundry, OpenRouter, and Vercel AI Gateway (
microsoft/microsoft-decision-1) (2026-10-09-microsoft-decision-1-model-foundry, 2026-10-09-microsoft-decision-1-vercel-gateway) - Pricing: $0.042/M input tokens, output free (Microsoft list price)
- Microsoft claims top accuracy on 36 blind benchmarks (~150k questions) and ~35× lower P50 latency vs GPT-6 Sol vs runner-up Quyet-1.0-Large (~4.5×) — vendor-reported
Benchmark and latency claims are Microsoft self-reported; independent verification pending.