Model Comparison

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

OpenAI

GPT-4.5

OpenAI

GPT-4.5 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 64.1% across 26 benchmarks. It excels particularly in GSM8k (97.0%), MMLU (90.8%), CharXiv-D (90.0%). The model shows particular specialization in code tasks with an average performance of 88.1%. It supports a 132K 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 2025, 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-4.5

OpenAI

2025-02-27

xAI

Grok-4

xAI

2025-07-09

4 months newer

Pricing Comparison

Cost per million tokens (USD)

OpenAI

GPT-4.5

Input:$75.00
Output:$150.00
xAI

Grok-4

$207.00 cheaper
Input:$3.00
Output:$15.00

Performance Metrics

Context window and performance specifications

OpenAI

GPT-4.5

Max Context:132.1K
xAI

Grok-4

Larger context
Max Context:264.0K

Average performance across 1 common benchmarks

OpenAI

GPT-4.5

Average Score:69.5%
xAI

Grok-4

+18.0%
Average Score:87.5%

Performance comparison across key benchmark categories

OpenAI

GPT-4.5

code
+9.1%
88.1%
general
59.3%
xAI

Grok-4

code
79.0%
general
+10.1%
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-4.5

1 providers

OpenAI

Throughput: 50 tok/s
Latency: 20ms
xAI

Grok-4

2 providers

xAI

Throughput: 100 tok/s
Latency: 0.7ms

ZeroEval

Throughput: 100 tok/s
Latency: 0.7ms
OpenAI

GPT-4.5

Avg Score:69.5%
Providers:1
xAI

Grok-4

+18.0%
Avg Score:87.5%
Providers:2