OpenAI: GPT-6 Luna

openai/gpt-6-luna

Context: 1,050,000In: $0.10/1MOut: $0.50/1MUpdated 2026-10-04

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...