Parallel Decisions now available on AI Gateway for free

Parallel Decisions Fast from Parallel has been integrated into Vercel’s AI Gateway, providing developers with a tool to query live web data for dynamic information such as company details, product specifications, or policy updates. The service returns answers with associated probabilities and direct citations from sources, allowing applications to make informed decisions based on current information. Users can deploy it without creating a separate Parallel account, simplifying access and integration into existing workflows.

The model supports three question formats: Boolean queries return a probability of yes or no, Choice questions select from predefined options, and Score questions evaluate responses against a defined rubric. Related questions can share context and retrieved evidence within a single request, improving efficiency for complex queries. Developers can invoke the model using the Parallel/parallel-decisions-fast identifier through the AI SDK, a TypeSafe-compatible API, or an OpenAI-compatible Decisions API.

Citations include source URLs, optional titles, and excerpts of evidence, all tied to the entire request rather than individual answers. This structure enables applications to automatically act on high-confidence responses while flagging uncertain results for human review. The system’s probabilistic outputs allow thresholds to be set for automated decision-making, reducing manual verification for clear-cut cases.

AI Gateway logs and tracks requests for Parallel Decisions Fast alongside other model usage, enabling budget monitoring and usage analytics. The feature is available at no cost through November 23, 2026, and developers can refer to the decision model documentation or the model catalog for implementation guidance and supported question types.