Models Model details

OpenAI

OpenAI: GPT-6 Luna Decisions

openai/gpt-6-luna-decisions

GPT-6 Luna Decisions is [GPT-6 Luna](/openai/gpt-6-luna) served through OpenAI's Decisions API. Instead of generating text, it reads the content passed as `state` (text, JSON, or images) and returns typed, probabilistic answers to named questions in a single request: the probability of yes for a yes/no question (`noul`), a probability for every option plus the most likely one (`choice`), or a probability for every level of an ordered rubric plus the expected score (`score`). It is built for classification, routing, moderation, and rubric grading where application code thresholds the returned numbers rather than parsing a chat reply. A request can carry up to 200 questions about the same content.

Input
$0.1

/ 1M tokens · Token reference

Output
$0

/ 1M tokens · Token reference

Context window
1.05M

tokens

Decisions output · Token reference fields do not establish an output-unit price.

Limits

Context

1,050,000

tokens

Max output

945,000

90% of the context window

Model facts

Author

OpenAI

Tokenizer

GPT

Modality

Text + Image -> Decisions

Created

Oct 6, 2026

Publication status

Hugging Face: not mappedLicense: not publishedParameter count: not published

Modalities

Input · TextInput · ImageOutput · Decisions