OpenAI
GPT-5.6 Luna
CTX1.05M
91Quality
Reasoning · Vision · Tools
TextImagePDFInput$0.20/M
TextOutput$1.20/M
Cost-efficient GPT-5.6 model for fast, high-volume workloads
PaidProprietary945/1044
OpenAI · Text line
GPT Luna
2 stages over 2 months, from GPT-5.6 Luna in Jul 2026 to GPT-6 Luna in Sep 2026.
Evolution chamber01 / 02
Ready to evolve
Every generation. A new possibility.
GPT-5.6 Luna · Jul 20262 stages, from GPT-5.6 Luna (Jul 2026) to GPT-6 Luna (Sep 2026). Press Evolve to watch each step.
How it grew
Context window
Max output
Output priceper 1M tokens, lower is better
Every stage
v5.6 Stage 1
OpenAIGPT-5.6 Luna
CTX1.05M91QualityReasoning · Vision · ToolsTextImagePDFInput$0.20/MTextOutput$1.20/MCost-efficient GPT-5.6 model for fast, high-volume workloads
PaidProprietary945/1044v6 Stage 2
OpenAIGPT-6 Luna
CTX1.05M91QualityReasoning · Vision · ToolsTextImagePDFInput$0.10/MTextOutput$0.50/MOpenAI's most efficient model for focused, high-volume tasks
PaidProprietary1020/1044