Microsoft releases Microsoft-Decision-1 model in Foundry, OpenRouter access to follow
Overview
Microsoft has released Microsoft-Decision-1, a model for fast decision-making, now available in its Foundry platform, according to Satya Nadella's X posts.
Nadella says the model will come to OpenRouter soon, but no date has been reported.
Microsoft says the model outperforms both LLMs and other decision models on structured decision tasks in latency and quality. A later Microsoft post says it was post-trained on Qwen3.5-9B for single-pass decision scoring and achieved the highest accuracy in a 36-benchmark comparison of nearly 150,000 questions, running 4.5 times faster than Quyet-1.0-Large and 35 times faster than GPT-6 Sol. These performance claims are Microsoft's own and have not been independently verified. Microsoft says it is testing the model internally for incident response, quality control, and scientific discovery, and plans to rebase it on other models, including MAI and OpenAI models.
Written by AI from the articles below · updated Oct 9, 4:25 PM ET
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Developments
2 developments
- Oct 9, 2:37 PM ET · 1 articleMicrosoft Decision-1 model now available in Foundry, coming soon to OpenRouterSatya Nadella: Microsoft's Decision-1 model now available in Foundry, with OpenRouter soon
- Oct 9, 2:37 PM ET · 4 articlesMicrosoft introduces Microsoft-Decision-1 model for fast decision-makingAndrew Curran: Post from Andrew Curran
Article timeline
The articles in this story. Times are ET.
🚨 AI News | TestingCatalog@testingcatalogXMicrosoft releases Microsoft-Decision-1, a 9B model for fast decisionsAIMicrosoft has made Microsoft-Decision-1 available on Microsoft Foundry, a model post-trained on Qwen3.5-9B for fast, single-pass decision scoring. Microsoft says it achieved the highest accuracy across a 36-benchmark comparison of nearly 150,000 questions, and runs 4.5 times faster than Quyet-1.0-Large and 35 times faster than GPT-6 Sol. Microsoft plans to rebase it on other models, including MAI and OpenAI models.

elvis@omarsar0XMicrosoft releases Microsoft-Decision-1, a fast model for decision-making tasksAIMicrosoft releases Microsoft-Decision-1, a model for fast decision-making, according to Satya Nadella. Nadella says it outperforms both LLMs and other decision models on structured decision tasks in latency and quality. Microsoft is testing it internally for incident response, quality control, and scientific discovery.

Andrew Curran@AndrewCurran_X
Satya Nadella@satyanadellaXMicrosoft unveils Microsoft-Decision-1, a model for fast decision-makingAIMicrosoft introduces Microsoft-Decision-1, a new model for fast decision-making that it says outperforms both LLMs and other decision models on structured decision tasks in latency and quality. The company says it is already testing the model across Microsoft for uses including incident response, quality control, and scientific discovery.

Satya Nadella@satyanadellaXMicrosoft's Decision-1 model now available in Foundry, with OpenRouter soonAIMicrosoft says its Decision-1 model is available now in Foundry and will come to OpenRouter soon. The post links to a Microsoft Command Line article about the model.
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