OpenAI: GPT-5.6 Luna

GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...

• 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.