About
About Decisions API
decisions-api.net is a developer guide to the OpenAI Decisions API announced on 2026-09-29 — and a working decision endpoint you can call today, served by decisions-1.
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What you can call
The public route is POST /api/v1/decisions. It accepts a state and 1 to 6 typed questions — Noul, Choice, or Score — and returns an answer with a probability for every option. Docs on this site show the request shape and the error codes.
The endpoint serves decisions-1 — the decision model this site runs. The playground calls the same route, and pricing is where you add credits for more calls.
OpenAI and Decisions API are trademarks of OpenAI. Jev and TypeSafe are trademarks of their respective owners. decisions-api.net is an independent service and is not affiliated with, endorsed by, or sponsored by OpenAI or TypeSafe AI. Product names are used only to identify and compare publicly announced products.