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Model Comparison

Fugu Ultra V2.0 vs Opus 4

Fugu Ultra V2.0 ranks #85 on the AI IQ leaderboard with an estimated IQ of 109, while Opus 4 ranks #149 on the AI IQ leaderboard with an estimated IQ of 95. The table below puts the two models side by side across the seven capability dimensions, emotional reasoning, cost, speed, and context window.

Fugu Ultra V2.0 profile →Opus 4 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
Fugu Ultra V2.0World (Other)Opus 4Anthropic
Rank#85#149
IQ10995
Abstract Reasoning9377
Mathematical Reasoning10393
Academic Reasoning126112
Programmatic Reasoning121109
Computer Use10875
Reliability104109
Knowledge Work10590
Emotional Reasoning——
Effective Cost / 1M Tokens$44.78$51.65
Sticker Price / 1M I/O Tokens$35.00$90.00
Speed——
Context Window1M—
Released2026-09-112025-05-22
Open WeightsNoNo
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