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Grok-4 Heavy vs Llama 3.1 Nemotron Ultra 253B v1
Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. Grok-4 Heavy supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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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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NVIDIA
Llama 3.1 Nemotron Ultra 253B v1 is a language model developed by NVIDIA. It achieves strong performance with an average score of 79.2% across 6 benchmarks. It excels particularly in MATH-500 (97.0%), IFEval (89.5%), GPQA (76.0%). Released in 2025, it represents NVIDIA's latest advancement in AI technology.
3 months newer
Llama 3.1 Nemotron Ultra 253B v1
NVIDIA
2025-04-07
Grok-4 Heavy
xAI
2025-07-09
Average performance across 9 common benchmarks
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Grok-4 Heavy
Average Score:53.0%(+0.2%)
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Llama 3.1 Nemotron Ultra 253B v1
Average Score:52.8%
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Knowledge Cutoff
Training data recency comparison
Llama 3.1 Nemotron Ultra 253B v1
2023-12-01
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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Llama 3.1 Nemotron Ultra 253B v1
0 providers
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Grok-4 Heavy
Avg Score:53.0%(+0.2%)
Providers:0
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Llama 3.1 Nemotron Ultra 253B v1
Avg Score:52.8%
Providers:0