GPT-6 Luna

gpt-6-luna

GPT-6 Luna is a compact, efficient model in OpenAI's GPT-6 family, delivering strong language intelligence at significantly improved cost efficiency. It offers reliable performance for everyday AI applications such as conversational AI, content generation, coding assistance, and automation workflows. With a large context window and optimized inference efficiency, GPT-6 Luna is ideal for developers building scalable AI products that need high throughput, low latency, and predictable operating costs.

Context Window

1.1M tokens

Maximum Output

128K tokens

Release Date

Sep 22, 2026

Modalities

GPT-6 Luna Pricing

Token TierInput PriceOutput PriceCache ReadCache Create 5m
<=272K$0.1/M$0.5/M$0.01/M$0.125/M
>272K$0.2/M$0.75/M$0.02/M$0.25/M

GPT-6 Luna API Capabilities

Reasoning

Supported

Tool calling

Supported

Temperature parameter

Not supported

Attachments

Supported

Knowledge Base

2026-05-18

Endpoint Protocols

Completions APIResponses APIMessages API

Model Highlights

The model’s key strengths.

Focused Efficiency

OpenAI positions Luna as its most efficient model for focused, high-volume tasks.

Improved Reliability

OpenAI reports better factual reliability than the previous Luna generation.

Long Context

The documented context window is 1,050,000 tokens.

Use Cases

Practical workloads for this model.

High-Volume Assistance

Handle repeated support, drafting, and classification work at scale.

Iterative Coding

Draft and refine code across many low-cost agent turns.

Large-Document Review

Summarize and compare lengthy source material within the supported context.

How to Use GPT-6 Luna via the TokenHub API

Create API key
import OpenAI from "openai"

const client = new OpenAI({
  apiKey: process.env.TOKENHUB_API_KEY,
  baseURL: "https://us-api.tokenhub.com/v1",
})

const result = await client.chat.completions.create({})
console.log(result.choices[0]?.message?.content)

GPT-6 Luna Benchmarks

Index score
Artificial Analysis Intelligence IndexArtificial Analysis broad capability aggregate33.9

Metrics sourced from Artificial Analysis

GPT-6 Luna Media and Demos

Selected public posts and videos about GPT-6 Luna.

X (Twitter)

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YouTube

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GPT-6 Luna FAQs

Answers to common model questions.

What is GPT-6 Luna?+

GPT-6 Luna is OpenAI’s efficient GPT-6 reasoning model for focused, high-volume work.

What is GPT-6 Luna best for?+

Use it for repeated assistance, coding iterations, and analysis of long material.

Why choose GPT-6 Luna?+

Choose it when throughput and low per-token cost matter; raise reasoning effort for harder work.

What tradeoffs should I consider?+

It is an efficiency tier; test critical answers and compare Sol for harder tasks.

How do I use GPT-6 Luna through TokenHub?+

If it is listed in your TokenHub account, use the exact model ID and endpoint shown there with your credentials.

How should I check pricing and availability?+

Check the live TokenHub model page for your account’s availability and rates; provider prices may differ from TokenHub billing.

Ready to use GPT-6 Luna?

Use one API key to access GPT-6 Luna and more AI models through TokenHub.

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