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Model Comparison

Fable 5.1 vs Gemini 3.1 Pro

Fable 5.1 ranks #1 on the AI IQ leaderboard with an estimated IQ of 138, while Gemini 3.1 Pro ranks #10 on the AI IQ leaderboard with an estimated IQ of 127. The table below puts the two models side by side across the six reasoning dimensions, emotional reasoning, cost, speed, and context window.

Fable 5.1 profile →Gemini 3.1 Pro 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 six scored Composite IQ dimensions, side by side
Domains Head to Head
Applied domain composite scores where at least one model is measured
Fable 5.1AnthropicGemini 3.1 ProGoogle
Rank#1#10
IQ138127
Abstract Reasoning129121
Mathematical Reasoning144129
Academic Reasoning147141
Programmatic Reasoning145121
Computer Use139128
Reliability121125
Emotional Reasoning—114
Effective Cost / 1M Tokens$146.29$9.53
Sticker Price / 1M I/O Tokens$60.00$14.00
Speed66 tok/s144 tok/s
Context Window1M1M
Released2026-09-012026-02-19
Open WeightsNoNo
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