+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
GPT-4o mini vs Grok-4 Heavy
Comprehensive side-by-side LLM comparison
GPT-4o mini leads with 6.7% higher average benchmark score. Overall, GPT-4o mini is the stronger choice for coding tasks.
+
+
+
+
OpenAI
GPT-4o mini is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 63.5% across 9 benchmarks. It excels particularly in HumanEval (87.2%), MGSM (87.0%), MMLU (82.0%). It supports a 144K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, it represents OpenAI's latest advancement in AI technology.
+
+
+
+
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.
11 months newer
GPT-4o mini
OpenAI
2024-07-18
Grok-4 Heavy
xAI
2025-07-09
Performance Metrics
Context window and performance specifications
Average performance across 14 common benchmarks
+
+
+
+
GPT-4o mini
Average Score:40.8%(+6.7%)
+
+
+
+
Grok-4 Heavy
Average Score:34.1%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
GPT-4o mini
2023-10-01
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
+
+
+
+
GPT-4o mini
1 providers
Azure
Throughput: 92 tok/s
Latency: 0.52ms
+
+
+
+
Grok-4 Heavy
+
+
+
+
GPT-4o mini
Avg Score:40.8%(+6.7%)
Providers:1
+
+
+
+
Grok-4 Heavy
Avg Score:34.1%
Providers:0