Microsoft Decision-1 now available on AI Gateway
Microsoft Decision-1 is now live on AI Gateway—a structured reasoning model for classification, routing, and scoring. Call it via API with just an AI Gateway key.
Why it matters
Microsoft ships a decision-making model accessible through unified API Gateway, lowering friction for enterprises building classification and routing workflows. Practitioner win: no separate Azure deployment required; usage and cost tracked alongside other models.
The key facts
16 to knowDecision-1 available on Vercel AI Gateway as of October 9, 2026
Answers typed questions with probabilities, choices, and scores
Use cases: classify support requests, select workflow next steps, assess AI responses against rubrics
Access via AI SDK decision API, OpenAI-compatible Decisions API, or TypeSafe-compatible API
Model name: microsoft/microsoft-decision-1
Requires only AI Gateway API key; no separate Azure account or deployment
Decision calls appear in logs and count toward budgets alongside other model requests
Multiple questions can share the same input in one request
Choice and score answers include probabilities for each option
Decision-1 available on Vercel AI Gateway as of Oct 9, 2026
Supports boolean yes/no questions, multi-choice selection, and ordered-criteria scoring
Answers include probabilities for each option, enabling confidence-based routing
Accessible via AI SDK, OpenAI-compatible Decisions API, and TypeSafe-compatible API
Single API key required; no separate Azure deployment or account needed
Decision calls logged and budgeted alongside other model requests in AI Gateway
Use cases: support-request classification, workflow-step selection, AI-response rubric assessment
The story so far
Earlier coverage of this storyline
- FLUX 3 Image now available on AI GatewayVercel Blog
- Mistral Large 4 now available on AI GatewayVercel Blog
- OpenAI Decisions API now available on AI GatewayVercel Blog
- Step 5 Preview now available on AI GatewayVercel Blog
- This story
Go to the source
Vercel Blogvercel.com
Publisher excerpt: is now available on . It answers typed questions about text with probabilities, choices, and scores. Use it to classify support requests, select the next step in a workflow, or assess an AI response against a rubric.Decision-1 from MicrosoftAI Gateway Ask yes/no questions, choose among named…