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.
/ 1M tokens · Token reference
/ 1M tokens · Token reference
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