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Grok-4 Heavy vs Phi 4 Reasoning
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 28.4% 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-4 Reasoning was developed to incorporate extended analytical thinking into the Phi-4 architecture, designed to spend more time on complex problem-solving. Built to combine compact model efficiency with reasoning depth, it represents Microsoft's exploration of thoughtful small models.
2 months newer
Phi 4 Reasoning
Microsoft
2025-04-30
Grok-4 Heavy
xAI
2025-07-09
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Average performance across 3 common benchmarks
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Grok-4 Heavy
Average Score:89.3%(+28.4%)
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Phi 4 Reasoning
Average Score:60.8%
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Knowledge Cutoff
Training data recency comparison
Grok-4 Heavy
2024-12-31
Phi 4 Reasoning
2025-03-01
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 4 Reasoning
0 providers
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Grok-4 Heavy
Avg Score:89.3%(+28.4%)
Providers:0
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Phi 4 Reasoning
Avg Score:60.8%
Providers:0