Microsoft Decision-1 now available on AI Gateway

Microsoft Decision-1 is now available on AI Gateway, offering a way to answer typed questions about text with probabilities, choices, and scores. The model supports use cases such as classifying support requests, selecting workflow steps, or assessing AI responses against a rubric.

Capabilities and Output

Decision-1 can answer yes/no questions, choose among named categories, or score inputs against ordered criteria. Multiple questions can share the same input in a single request. Answers for choices and scores include probabilities for each option, allowing applications to decide when to act or flag uncertain results for review.

Integration and Access

Developers can call Decision-1 through the AI SDK decision API, the OpenAI-compatible Decisions API, or the TypeSafe-compatible API. Access requires only an AI Gateway API key, eliminating the need for a separate Azure account or deployment. To use the model, specify microsoft/microsoft-decision-1 as the model name in requests.

AI Gateway provides unified access to models, tracking usage and costs. Decision calls appear in logs and count toward budgets alongside other model requests.