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Grok-4 Heavy vs Kimi K2-Instruct-0905
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 29.8% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. Overall, Grok-4 Heavy is the stronger choice for coding tasks.
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xAI
Grok 4 Heavy was created as a larger, more capable variant of Grok 4, designed to provide maximum reasoning depth and analytical capability. Built for the most demanding applications requiring sophisticated problem-solving, it represents xAI's flagship offering in the fourth generation.
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Moonshot AI
Kimi K2 Instruct-0905 represents a specific release iteration of the K2 Instruct model, developed to incorporate refinements and improvements. Built to provide enhanced instruction-following based on deployment feedback, it continues the evolution of Moonshot's instruction-tuned offerings.
1 month newer
Grok-4 Heavy
xAI
2025-07-09
Kimi K2-Instruct-0905
Moonshot AI
2025-09-05
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Average performance across 3 common benchmarks
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Grok-4 Heavy
Average Score:89.3%(+29.8%)
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Kimi K2-Instruct-0905
Average Score:59.4%
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Knowledge Cutoff
Training data recency comparison
Grok-4 Heavy
2024-12-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Grok-4 Heavy
0 providers
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Kimi K2-Instruct-0905
0 providers
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Grok-4 Heavy
Avg Score:89.3%(+29.8%)
Providers:0
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Kimi K2-Instruct-0905
Avg Score:59.4%
Providers:0