Last refreshed 2026-10-07. Next refresh: weekly.
Why use GPT-6 Luna Decisions on OpenAI API?
OpenAI API offers GPT-6 Luna Decisions with pay-as-you-go pricing at $0.10/1M input tokens. OpenAI is a leading AI research and deployment company dedicated to developing safe and beneficial artificial general intelligence (AGI) for humanity.
Compare GPT-6 Luna Decisions across 2 providers to find the best fit for your use caseSetup recipe
Python + curlpip install openaiexport OPENAI_API_KEY=...import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(gpt-6-lunaRequest example
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)Gotchas
- Use provider model ID "gpt-6-luna", not the LLMReference slug "gpt-6-luna-decisions".
- Use the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".
- The examples expect OPENAI_API_KEY; rename it only if your application config maps the new variable.
Compare GPT-6 Luna Decisions Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenAI API | $0.10 | Free |
| Vercel AI Gateway | $0.10 | Free |
Pricing
| 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.