Model Comparison

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

OpenAI

GPT-4o

OpenAI

GPT-4o is a multimodal language model developed by OpenAI. The model shows competitive results across 32 benchmarks. It excels particularly in AI2D (94.2%), DocVQA (92.8%), ChartQA (85.7%). The model shows particular specialization in vision tasks with an average performance of 82.5%. It supports a 144K token context window for handling large documents. The model is available through 3 API providers. 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

xAI

Grok-4 is a multimodal language model developed by xAI. It achieves strong performance with an average score of 63.1% across 7 benchmarks. It excels particularly in AIME 2025 (91.7%), HMMT25 (90.0%), GPQA (87.5%). It supports a 264K token context window for handling large documents. The model is available through 2 API providers. 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

OpenAI

2024-08-06

xAI

Grok-4

xAI

2025-07-09

11 months newer

Pricing Comparison

Cost per million tokens (USD)

OpenAI

GPT-4o

$5.50 cheaper
Input:$2.50
Output:$10.00
xAI

Grok-4

Input:$3.00
Output:$15.00

Performance Metrics

Context window and performance specifications

OpenAI

GPT-4o

Max Context:144.4K
xAI

Grok-4

Larger context
Max Context:264.0K

Average performance across 1 common benchmarks

OpenAI

GPT-4o

Average Score:70.1%
xAI

Grok-4

+17.4%
Average Score:87.5%

Performance comparison across key benchmark categories

OpenAI

GPT-4o

code
+2.0%
81.0%
general
52.1%
xAI

Grok-4

code
79.0%
general
+17.3%
69.3%
Benchmark Scores - Detailed View
Side-by-side comparison of all benchmark scores
Knowledge Cutoff
Training data recency comparison

Grok-4

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

3 providers

Azure

Throughput: 99 tok/s
Latency: 0.53ms

ZeroEval

Throughput: 99 tok/s
Latency: 0.53ms

OpenAI

Throughput: 132 tok/s
Latency: 0.5ms
xAI

Grok-4

2 providers

xAI

Throughput: 100 tok/s
Latency: 0.7ms

ZeroEval

Throughput: 100 tok/s
Latency: 0.7ms
OpenAI

GPT-4o

Avg Score:70.1%
Providers:3
xAI

Grok-4

+17.4%
Avg Score:87.5%
Providers:2