Model Comparison

Gemini 4 Carbon vs Opus 5.5

Gemini 4 Carbon ranks #5 on the AI IQ leaderboard with an estimated IQ of 139, while Opus 5.5 ranks #2 on the AI IQ leaderboard with an estimated IQ of 141. The table below puts the two models side by side across the seven capability dimensions, emotional reasoning, cost, speed, and context window.

Gemini 4 Carbon profile →Opus 5.5 profile →

First model Second model

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

	Gemini 4 CarbonGoogle	Opus 5.5Anthropic
Rank	#5	#2
IQ	139	141
Abstract Reasoning	121	132
Mathematical Reasoning	145	149
Academic Reasoning	136	138
Programmatic Reasoning	153	154
Computer Use	156	149
Reliability	135	133
Knowledge Work	130	134
Emotional Reasoning	—	—
Effective Cost / 1M Tokens	—	$35.73
Sticker Price / 1M I/O Tokens	—	$24.00
Speed	—	98 tok/s
Context Window	—	1M
Released	2026-10-28	2026-09-22
Open Weights	No	No

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