# OpenAI previews Decisions API for real-time decisions



OpenAI



Decisions API uses GPT-6 Luna to answer predefined questions using text or image context. It supports classification, routing and choosing an agent’s next action. These use cases overlap with Jev and Laya, but the underlying model and implementation differ. Jev and Laya are designed for typed decisions; OpenAI has not published full implementation details for its Luna-based service. The API is in limited preview.

- Event time: Sep 30, 2026 01:00 Wed · Beijing Time (UTC+8)
- Review updated: Sep 30, 2026 09:19 Wed · Beijing Time (UTC+8)

## Sources

- OpenAI previews Decisions API for real-time decisions — evidence summary: https://x.com/OpenAIDevs/status/2105003318917697873
- DevDay 2026: Decisions API — evidence summary: https://openai.com/index/devday-2026-recap/
- TypeSafe Jev architecture overview: https://typesafe.ai/blog/introducing-system-one-models-and-jev
- Laya primary repository: https://github.com/NandhaKishorM/laya

Canonical entry: https://www.ailyre.com/source/?id=openai-decisions-api-luna-preview-2026-09-29&lang=en