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Claude 3 Sonnet vs Grok-4 Heavy
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 48.0% higher average benchmark score. Claude 3 Sonnet is available on 3 providers. Overall, Grok-4 Heavy is the stronger choice for coding tasks.
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Anthropic
Claude 3 Sonnet was introduced as the balanced middle tier of the Claude 3 family, offering a combination of strong capabilities and operational speed. Designed to provide an optimal tradeoff between intelligence and performance for everyday tasks, it served as a versatile solution for a wide range of enterprise and consumer applications.
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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.
1 year newer
Claude 3 Sonnet
Anthropic
2024-02-29
Grok-4 Heavy
xAI
2025-07-09
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Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude 3 Sonnet
Average Score:40.4%
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Grok-4 Heavy
Average Score:88.4%(+48.0%)
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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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Claude 3 Sonnet
3 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
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Claude 3 Sonnet
Avg Score:40.4%
Providers:3
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Grok-4 Heavy
Avg Score:88.4%(+48.0%)
Providers:0