OpenAIPaidOperational

GPT 5.6 Luna Xhigh

API model name: gpt-5.6-luna-xhigh

GPT 5.6 Luna Xhigh is OpenAI's chat model, served on the Api.Airforce unified API. Capabilities include Reasoning. It is priced at $0.10 per million input tokens and $0.62 per million output tokens. That is below the provider's $0.20 official input rate. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

Pricing

Input / 1M tokens
$0.10
Output / 1M tokens
$0.62
Cache write / 1M tokens
$0.15
Official input rate
$0.20
Official output rate
$1.20

Api.Airforce price vs. the provider's official rate.-48%

Specifications

Provider
OpenAI
Type
chat model

Capabilities

Reasoning

Benchmarks

Independent evaluations and measured speed from Artificial Analysis.

Measured atSame model, different reasoning effort.
Intelligence Index
52.3/100
Coding Index
71.4/100
GPQA Diamond91%
Humanity's Last Exam40%
SciCode53%
τ-bench Banking31%
Terminal-Bench 2.181%
LCR78%
Output speed128.5 tok/s

GPT-5.6 Luna (max) · 26.8–52.3

Source: Benchmark data by Artificial Analysis (artificialanalysis.ai)

What is GPT 5.6 Luna Xhigh used for?

  • Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
  • Complex reasoning — math, coding and step-by-step problem solving.

GPT 5.6 Luna Xhigh vs. similar models

ModelIntelligenceContextInput / 1MOutput / 1M
GPT 5.6 Luna Xhigh52.3$0.10$0.62
Babbage 002$0.34$0.34
Chatgpt 4o Latest$2.75$14.50
Codex Auto Review$0.33$1.99

Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.

Related models

GPT 5.6 Luna Xhigh — frequently asked questions

How much does GPT 5.6 Luna Xhigh cost?
GPT 5.6 Luna Xhigh is billed pay-as-you-go at $0.10 per 1M input tokens and $0.62 per 1M output tokens. There is no subscription — you only pay for what you use.
What can GPT 5.6 Luna Xhigh do?
GPT 5.6 Luna Xhigh supports Reasoning.
Is GPT 5.6 Luna Xhigh free to use?
GPT 5.6 Luna Xhigh is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use GPT 5.6 Luna Xhigh via the API?
GPT 5.6 Luna Xhigh is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID gpt-5.6-luna-xhigh with your Api.Airforce API key.
Who makes GPT 5.6 Luna Xhigh?
GPT 5.6 Luna Xhigh is OpenAI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.