GPT-6 Luna

OpenAI · released 22 Sept 2026

Input$0.1per 1M tokens

Output$0.5per 1M tokens

Context1,050Ktokens

WeightsClosed

context on a 1K–2M scale

About

GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...

Details

Lab: OpenAIopenrouter.ai · 3 Oct 2026
Context: 1,050Kopenrouter.ai · 3 Oct 2026
Input price: $0.1 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $0.5 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 128,000 tokensopenrouter.ai · 3 Oct 2026
Inputs: file, image, textopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/openai/gpt-6-luna· checked 3 Oct 2026