OpenAI Decisions API
OpenAI announced the Decisions API at DevDay on 2026-09-29. OpenAI has not released it.
What OpenAI announced
OpenAI's DevDay 2026 recap, read on 2026-09-29, names a model called Luna. Luna answers questions a developer defines, with a finite set of answers fixed in advance. The context can be text or an image. OpenAI has published no schema, no price and no release date.
What ThinkThen knows
ThinkThen has not tested the Decisions API. Nobody knows yet whether it speaks System One, the wire shape ThinkThen speaks. This page will gain setup steps when OpenAI releases the API.
From your language
Each page shows how its language names a backend.
On GitHub: github.com/botassembly/thinkthen