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GPT-6 Luna Decisions

API docs

Typed Choice, Score and Noul decisions about text, JSON or inline images for classification, routing and scoring. Use /v1/decisions or /v1/systemone; text-only questions compatibility is available through Chat Completions, Messages and Responses. Uses OpenAI’s native Decisions API. Input tokens are billed; output is free.

Added Oct 8, 2026

Pricing

Auto routing · per 1M tokens
Input
$0.10
Output
Free
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Specifications

Context window
1.1M
Image input
Yes
Questions per request
128

API request

Send your application state and typed questions to POST /api/v1/decisions. Each answer comes back with its probabilities.

{
  "model": "openai/gpt-6-luna-decisions",
  "state": "Customer message: I was charged twice for the same order.",
  "questions": {
    "team": {
      "type": "choice",
      "instructions": "Which team should handle this message?",
      "criteria": {
        "billing": "Payments, refunds or invoices",
        "technical": "Bugs or errors in the product"
      }
    }
  }
}
Decisions API docs

Providers

Auto routing is available for this model. Explicit provider selection is not available.

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