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Model Comparison

GPT 5.3 Codex vs Hy4

GPT 5.3 Codex ranks #68 on the AI IQ leaderboard with an estimated IQ of 112, while Hy4 ranks #70 on the AI IQ leaderboard with an estimated IQ of 112. The table below puts the two models side by side across the seven capability dimensions, emotional reasoning, cost, speed, and context window.

GPT 5.3 Codex profile →Hy4 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 5.3 CodexOpenAIHy4China (Other)
Rank#68#70
IQ112112
Abstract Reasoning8489
Mathematical Reasoning103135
Academic Reasoning129100
Programmatic Reasoning124138
Computer Use113122
Reliability115101
Knowledge Work113100
Emotional Reasoning——
Effective Cost / 1M Tokens$18.57$3.30
Sticker Price / 1M I/O Tokens$15.75$3.33
Speed103 tok/s—
Context Window400K1.0M
Released2026-02-052026-08-28
Open WeightsNoYes
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