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GPT-4 vs Grok-4 Heavy
Comprehensive side-by-side LLM comparison
GPT-4 leads with 26.8% higher average benchmark score. GPT-4 is available on 2 providers. Overall, GPT-4 is the stronger choice for coding tasks.
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OpenAI
GPT-4 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 77.7% across 12 benchmarks. It excels particularly in AI2 Reasoning Challenge (ARC) (96.3%), HellaSwag (95.3%), Uniform Bar Exam (90.0%). The model is available through 2 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly.
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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.
2 years newer
GPT-4
OpenAI
2023-06-13
Grok-4 Heavy
xAI
2025-07-09
Performance Metrics
Context window and performance specifications
Average performance across 17 common benchmarks
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GPT-4
Average Score:54.9%(+26.8%)
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Grok-4 Heavy
Average Score:28.1%
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Knowledge Cutoff
Training data recency comparison
GPT-4
2022-12-31
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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GPT-4
2 providers
Azure
Throughput: 104 tok/s
Latency: 0.3ms
OpenAI
Throughput: 100 tok/s
Latency: 0.5ms
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GPT-4
Avg Score:54.9%(+26.8%)
Providers:2
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Grok-4 Heavy
Avg Score:28.1%
Providers:0