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Model Comparison

GPT 5.6 Luna vs GPT 6 Luna

GPT 5.6 Luna ranks #31 on the AI IQ leaderboard with an estimated IQ of 124, while GPT 6 Luna ranks #27 on the AI IQ leaderboard with an estimated IQ of 125. The table below puts the two models side by side across the seven capability dimensions, emotional reasoning, cost, speed, and context window.

GPT 5.6 Luna profile →GPT 6 Luna profile →
Where They Sit on the IQ Bell Curve
Both models highlighted on the standard normal IQ distribution of every tracked model
IQ Dimensions Head to Head
The seven scored Composite IQ dimensions, side by side
Domains Head to Head
Applied domain composite scores where at least one model is measured
GPT 5.6 LunaOpenAIGPT 6 LunaOpenAI
Rank#31#27
IQ124125
Abstract Reasoning10499
Mathematical Reasoning138138
Academic Reasoning129131
Programmatic Reasoning130132
Computer Use126129
Reliability116119
Knowledge Work125126
Emotional Reasoning105—
Effective Cost / 1M Tokens$1.63$0.77
Sticker Price / 1M I/O Tokens$1.40$0.60
Speed126 tok/s124 tok/s
Context Window1M1.1M
Released2026-07-092026-09-22
Open WeightsNoNo
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