Decisions API (GPT-6 Luna)
OpenAI's decision endpoint, announced at DevDay 2026. It focuses GPT-6 Luna on developer-defined questions that have a finite set of predefined answers, with text or image context, for classification, routing and an agent's next action.
In limited preview since 29 September 2026, with a broad release promised within days. OpenAI's announcement gives no pricing, documentation, probability format or benchmark numbers, and does not say whether yes/no and rubric-score questions are separate types; the tenfold speed-up quoted in the press is not on OpenAI's page. Re-check the docs at general availability before adding prices or capabilities.
What it decides
- choice — picks one option from a set
- classify — assigns a category from a fixed taxonomy
- route — sends the input to one of several destinations
At a glance
| Maker | OpenAI |
| Released | 2026-09-29 |
| License | proprietary |
Hosted API
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