OpenAI: GPT-5.6 Luna Pro

Name: OpenAI: GPT-5.6 Luna Pro
Brand: openai
SKU: openai/gpt-5.6-luna-pro
Price: 351.00 KRW
Availability: InStock

openai/gpt-5.6-luna-pro

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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

Modalities

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In / out price

₩351 / ₩2,106

Context

1.05M

Released

Jul 9, 2026

Pricing

Prices are quoted in Korean won. Changes to the exchange rate or margin show up immediately.

Input (prompt)	₩351 / 1M
Output (completion)	₩2,106 / 1M
Cache read	₩35 / 1M
Cache write	₩439 / 1M

1,000 input tokens plus 1,000 output tokens costs about ₩2.46.