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OpenAI · API model

GPT-6 Luna Pro

GPT-6 Luna Pro is the same underlying model as [GPT-6 Luna](https://openrouter.ai/openai/gpt-6-luna), served with reasoning.mode set to pro for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

Context
1.05M
Input / 1M
$0.1
Output / 1M
$0.5
Released
Sep 22, 2026
Specifications

GPT-6 Luna Pro specs

Provider
OpenAI
Type
API model
Model ID
openai/gpt-6-luna-pro
Context window
1,050,000 tokens1.05M
Input price
$0.1per 1M input tokens
Output price
$0.5per 1M output tokens
Accepts
file, image, text
Produces
text
Released
Sep 22, 2026
Popularity
37/100position #33 in OpenRouter's weekly usage ranking
Source
OpenRouter
Overview

About GPT-6 Luna Pro

GPT-6 Luna Pro is an API model from OpenAI, released on Sep 22, 2026, with a context window of 1,050,000 tokens, pricing of $0.1 per million input tokens and $0.5 per million output tokens. It accepts file, image, text input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.0015.

Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON modeReasoning
FAQ

GPT-6 Luna Pro questions

What is the context window of GPT-6 Luna Pro?

GPT-6 Luna Pro supports a context window of 1,050,000 tokens.

How much does GPT-6 Luna Pro cost?

GPT-6 Luna Pro is listed at $0.1 per million input tokens and $0.5 per million output tokens on OpenRouter.

When was GPT-6 Luna Pro released?

GPT-6 Luna Pro was published on Sep 22, 2026.

What inputs does GPT-6 Luna Pro accept?

GPT-6 Luna Pro accepts file, image, text input and produces text output.