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Grok-4 Heavy vs Kimi K2-Instruct-0905
Comprehensive side-by-side LLM comparison
Kimi K2-Instruct-0905 leads with 43.2% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. Overall, Kimi K2-Instruct-0905 is the stronger choice for coding tasks.
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xAI
Grok-4 Heavy is a multimodal language model developed by xAI. It achieves strong performance with an average score of 79.5% across 6 benchmarks. It excels particularly in AIME 2025 (100.0%), HMMT25 (96.7%), GPQA (88.4%). As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents xAI's latest advancement in AI technology.
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Moonshot AI
Kimi K2-Instruct-0905 is a language model developed by Moonshot AI. It achieves strong performance with an average score of 64.1% across 29 benchmarks. It excels particularly in MATH-500 (97.4%), MMLU-Redux (92.7%), IFEval (89.8%). It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents Moonshot AI's latest advancement in AI technology.
1 month newer
Grok-4 Heavy
xAI
2025-07-09
Kimi K2-Instruct-0905
Moonshot AI
2025-09-05
Average performance across 32 common benchmarks
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Grok-4 Heavy
Average Score:14.9%
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Kimi K2-Instruct-0905
Average Score:58.1%(+43.2%)
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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:14.9%
Providers:0
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Kimi K2-Instruct-0905
Avg Score:58.1%(+43.2%)
Providers:0