OpenAI: GPT-5.6 Luna Pro

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

• Context window: 1,050,000 tokens
• Input: file, image, text
• Output: text
• Pricing: $1/M input tokens, $6/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.