OpenAI: GPT-6 Luna Decisions

Coming soonQuick start

GPT-6 Luna Decisions is OpenAI's structured decision model, released 2026-10, built on GPT-6 Luna and served through the Decisions API. Instead of free-form text, it returns typed probabilities for yes/no, multiple-choice, or rubric-based questions over supplied state. It suits classification, routing, moderation, and grading where code thresholds numbers rather than parsing chat replies, handling up to 200 questions per request.

This model isn’t available on MirAPI yet, so the prices shown are the official list prices. Create an account to get notified when it goes live.

Modalities
inTextinImageoutText
Price / 1M
$0.10 / —
Context
1.05M
Released
Oct 6, 2026

Capabilities

VisionLong contextPrompt caching

Showcase

Every chat model gets the same three fixed prompts. Outputs are archived verbatim, so you can copy a prompt and reproduce the result.

Task prompt · identical for all models
Build a single-file HTML page using three.js from a CDN: a low-poly planet with a tilted ring of ~200 orbiting particles, a soft key light plus rim light, slow auto-rotation, and drag-to-orbit controls. No build tools — one file only.
Archived output
Archive not published yet

Every model will run this exact prompt, and its output will appear here verbatim with token counts and the cost per run.

Quick start

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.mirapi.ai/v1",   # changed
    api_key=os.environ["MIRAPI_API_KEY"],   # changed
)

resp = client.chat.completions.create(
    model="",
    messages=[{"role": "user", "content": "Hello"}],
)
Wire GPT-6 Luna Decisions into your product

1M free tokens to start, no card required. It’s OpenAI-compatible, so you only change the base URL.

Start free