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Grok-4 Heavy vs Phi-3.5-MoE-instruct
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 51.6% 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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Microsoft
Phi-3.5 MoE was created using a mixture-of-experts architecture, designed to provide enhanced capabilities while maintaining efficiency through sparse activation. Built to combine the benefits of larger models with practical computational requirements, it represents Microsoft's exploration of efficient scaling techniques.
10 months newer
Phi-3.5-MoE-instruct
Microsoft
2024-08-23
Grok-4 Heavy
xAI
2025-07-09
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Average performance across 1 common benchmarks
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Grok-4 Heavy
Average Score:88.4%(+51.6%)
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Phi-3.5-MoE-instruct
Average Score:36.8%
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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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Phi-3.5-MoE-instruct
0 providers
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Grok-4 Heavy
Avg Score:88.4%(+51.6%)
Providers:0
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Phi-3.5-MoE-instruct
Avg Score:36.8%
Providers:0