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Grok-4 Heavy vs Phi 4 Reasoning Plus
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 22.6% 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-4 Reasoning Plus was created as an enhanced reasoning variant, designed to provide even deeper analytical capabilities within the Phi-4 family. Built to maximize reasoning quality while maintaining the efficiency benefits of small models, it represents the most capable reasoning-focused option in the Phi-4 series.
2 months newer
Phi 4 Reasoning Plus
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%(+22.6%)
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Phi 4 Reasoning Plus
Average Score:66.7%
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Knowledge Cutoff
Training data recency comparison
Grok-4 Heavy
2024-12-31
Phi 4 Reasoning Plus
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 Plus
0 providers
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Grok-4 Heavy
Avg Score:89.3%(+22.6%)
Providers:0
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Phi 4 Reasoning Plus
Avg Score:66.7%
Providers:0