OpenAI released Decisions API on September 30, 2026, saying it allows applications to receive structured decisions for narrow questions. It is the company's first software update since the launch of GPT-6 Luna.
OpenAI reported the API runs on a version of GPT-6 Luna, measured on a limited preview phase. That compares with broader availability expected after launch.
Decisions API is built on GPT-6 Luna and targets applications needing structured choices for classification, routing, and agent next steps. Availability begins with a limited preview, initially for developers.
"A question such as 'Which queue should receive this ticket?' has a finite output space," said Pasquale Pillitteri. The same reporting describes a limited preview, with broader availability expected after launch.
The announcement follows the DevDay 2026 event. The source itself frames the significance as a shift from general-purpose models to specialized decision endpoints.
OpenAI did not say how the API will evolve post-launch, and the preview is still changing. The source says production teams should verify the current OpenAI contract before wiring it into a critical system.
Source: huggingface
