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Gemini 3 Deep Think vs Grok-4 Heavy

Google vs xAI — benchmarks, pricing, and capabilities side by side.

  • Grok-4 Heavy has the higher intelligence index (89.3 vs 69.5)
Gemini 3 Deep ThinkGrok-4 Heavy
Intelligence index69.589.3
DeveloperGooglexAI
TypeMultimodalMultimodal
AccessAPI onlyAPI only
Context window1,000,000 tokens
Input price$0.00 / 1M
Output price$0.00 / 1M
Speed
ReleasedNovember 18, 2025July 9, 2025
Parameters
Input modalitiesText, Image, Audio, Video
Output modalitiesText

Shared benchmarks

Gemini 3 Deep Think
Grok-4 Heavy
GPQA Diamond
93.8
88.4
Humanity’s Last Exam
41
50.7