GPT-5.6 Luna
by OpenAI · ID gpt-5-6-luna · Released 2026-07 · Proprietary
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ELO Score
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MMLU
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HumanEval
1.05M
Context Window
$0.20
Input Price
About GPT-5.6 Luna
Fastest and cheapest GPT-5.6 tier, cut 80% in price on July 30, 2026. At $0.20 per million input tokens it is priced for high-volume classification, routing and extraction rather than deep reasoning.
Not sure where to find it? Search query: "GPT-5.6 Luna official"