GPT-5.6 Luna Pro

openai/gpt-5.6-luna-pro · rates as of 2026-08-04 · Benchmarks · Plans · Calculator

GPT-5.6 Luna Pro is the same underlying model as [GPT-5.6 Luna](https://openrouter.ai/openai/gpt-5.6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Cheapest input

$0.1

$/MTok · OpenRouter

Cheapest output

$0.6

$/MTok

Context

1.1M

tokens

Offers

2 sources

Offers

Same model, different listings. First-party, router, and aggregator rows stay separate so you can see the spread instead of a single blended number.

Source	Provider	Input	Output	Cache read	Context
OpenRoutercheapestopenai/gpt-5.6-luna-pro	OpenRouter	$0.1	$0.6	$0.01	1.1M
models.devopenai/gpt-5.6-luna-pro	Kilo Gateway	$0.2	$1.20	$0.02	1.1M

Capabilities

Reasoning
Tool calling
Structured output
Attachments
In: text
In: image
In: pdf
In: file
Out: text

Knowledge cutoff: 2026-02-16Released: 2026-07-09Family: gpt-luna

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