Model Comparison

Comprehensive side-by-side analysis of model capabilities and performance

OpenAI

GPT-4o mini

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

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%). The model shows particular specialization in general tasks with an average performance of 79.5%. 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.

OpenAI

GPT-4o mini

OpenAI

2024-07-18

xAI

Grok-4 Heavy

xAI

2025-07-09

11 months newer

Performance Metrics

Context window and performance specifications

OpenAI

GPT-4o mini

Larger context
Max Context:144.4K
xAI

Grok-4 Heavy

Max Context:-

Average performance across 1 common benchmarks

OpenAI

GPT-4o mini

Average Score:40.2%
xAI

Grok-4 Heavy

+48.2%
Average Score:88.4%

Performance comparison across key benchmark categories

OpenAI

GPT-4o mini

code
+7.8%
87.2%
general
52.7%
xAI

Grok-4 Heavy

code
79.4%
general
+26.9%
79.5%
Benchmark Scores - Detailed View
Side-by-side comparison of all benchmark scores
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

OpenAI

GPT-4o mini

1 providers

Azure

Throughput: 92 tok/s
Latency: 0.52ms
xAI

Grok-4 Heavy

0 providers
OpenAI

GPT-4o mini

Avg Score:40.2%
Providers:1
xAI

Grok-4 Heavy

+48.2%
Avg Score:88.4%
Providers:0