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Grok-4 Heavy vs Phi 4 Reasoning
Comprehensive side-by-side LLM comparison
Phi 4 Reasoning leads with 25.0% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. Overall, Phi 4 Reasoning 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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Microsoft
Phi 4 Reasoning is a language model developed by Microsoft. It achieves strong performance with an average score of 75.1% across 11 benchmarks. It excels particularly in FlenQA (97.7%), HumanEval+ (92.9%), IFEval (83.4%). It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents Microsoft's latest advancement in AI technology.
2 months newer
Phi 4 Reasoning
Microsoft
2025-04-30
Grok-4 Heavy
xAI
2025-07-09
Average performance across 14 common benchmarks
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Grok-4 Heavy
Average Score:34.1%
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Phi 4 Reasoning
Average Score:59.0%(+25.0%)
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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:34.1%
Providers:0
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Phi 4 Reasoning
Avg Score:59.0%(+25.0%)
Providers:0