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Grok-4 vs Grok-4 Heavy
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 8.6% higher average benchmark score. Grok-4 is available on 2 providers. Overall, Grok-4 Heavy is the stronger choice for coding tasks.
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xAI
Grok 4 represents the fourth generation of xAI's language models, developed to continue advancing the frontier of AI reasoning and knowledge. Built to handle increasingly complex tasks with enhanced reliability, it demonstrates xAI's commitment to pushing AI capabilities forward.
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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.
Launched on the same date
Grok-4
xAI
2025-07-09
Grok-4 Heavy
xAI
2025-07-09
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Performance Metrics
Context window and performance specifications
Average performance across 6 common benchmarks
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Grok-4
Average Score:70.9%
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Grok-4 Heavy
Average Score:79.5%(+8.6%)
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Knowledge Cutoff
Training data recency comparison
Grok-4
2024-12-31
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
2 providers
xAI
Throughput: 100 tok/s
Latency: 0.7ms
ZeroEval
Throughput: 100 tok/s
Latency: 0.7ms
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Grok-4
Avg Score:70.9%
Providers:2
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Grok-4 Heavy
Avg Score:79.5%(+8.6%)
Providers:0