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Grok-4 Heavy vs Pixtral-12B

xAI vs Mistral AI — benchmarks, pricing, and capabilities side by side.

  • Grok-4 Heavy has the higher intelligence index (89.3 vs 66.1)
Grok-4 HeavyPixtral-12B
Intelligence index89.366.1
DeveloperxAIMistral AI
TypeMultimodalMultimodal
AccessAPI onlyOpen weights
Context window128,000 tokens
Input price$0.15 / 1M
Output price$0.15 / 1M
Speed0 tok/s
ReleasedJuly 9, 2025September 17, 2024
Parameters12400000000
Input modalities
Output modalities