OpenAI API exposes GPT-6 Luna Decisions through model ID gpt-6-luna. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.
Last refreshed 2026-10-07. Next refresh: weekly.
Quick Start
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Code Examples
pip install openaiOPENAI_API_KEYgpt-6-lunaUse the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
model="gpt-6-luna",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Pricing on OpenAI API
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.10 |
| Output tokens | Free |
| Image input | $1.00 |
Capabilities
About GPT-6 Luna Decisions
GPT-6 Luna Decisions is OpenAI's Decisions API surface (public beta) powered by GPT-6 Luna. Applications send shared text and/or image input plus typed questions (predicate / choice / score) to POST /v1/decisions and receive calibrated probabilities, choices with confidence, or rubric scores — about 10× faster than Luna via the Responses API per OpenAI docs. First-party model field is still gpt-6-luna (not a separate OpenAI model id). Billing is input tokens only at $0.10 per 1M tokens; no cache-read, cache-write, or output-token charges. Regional processing premiums and long-context input multipliers apply. Vercel AI Gateway exposes the same surface as openai/gpt-6-luna-decisions.