GPT-6 Luna Decisions

GPT-6 Luna served through OpenAI’s Decisions API for typed, probabilistic answers.

GPT-6 Luna Decisions is GPT-6 Luna offered through OpenAI’s Decisions API, in public beta from October 6, 2026 and generally available since October 22, 2026 (up to 400 questions per request). Instead of writing text, it reads text or images and returns typed answers: the probability that a statement is true, a pick from fixed options with a probability for each, or a score on a scale.

Provider
OpenAI
Type
Decision model
Released
Oct 6, 2026
Input
text, image
Output
decision
Open weights
No

Best for

Strengths

More from OpenAI

Sources