Model Comparison

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

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.

Microsoft

Phi-3.5-MoE-instruct

Microsoft

Phi-3.5-MoE-instruct is a language model developed by Microsoft. It achieves strong performance with an average score of 65.6% across 31 benchmarks. It excels particularly in ARC-C (91.0%), OpenBookQA (89.6%), GSM8k (88.7%). The model shows particular specialization in reasoning tasks with an average performance of 85.4%. It's licensed for commercial use, making it suitable for enterprise applications. Released in 2024, it represents Microsoft's latest advancement in AI technology.

Microsoft

Phi-3.5-MoE-instruct

Microsoft

2024-08-23

xAI

Grok-4 Heavy

xAI

2025-07-09

10 months newer

Average performance across 1 common benchmarks

xAI

Grok-4 Heavy

+51.6%
Average Score:88.4%
Microsoft

Phi-3.5-MoE-instruct

Average Score:36.8%

Performance comparison across key benchmark categories

xAI

Grok-4 Heavy

general
+18.6%
79.5%
code
+3.7%
79.4%
Microsoft

Phi-3.5-MoE-instruct

general
60.9%
code
75.8%
Benchmark Scores - Detailed View
Side-by-side comparison of all benchmark scores
Knowledge Cutoff
Training data recency comparison

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

xAI

Grok-4 Heavy

0 providers
Microsoft

Phi-3.5-MoE-instruct

0 providers
xAI

Grok-4 Heavy

+51.6%
Avg Score:88.4%
Providers:0
Microsoft

Phi-3.5-MoE-instruct

Avg Score:36.8%
Providers:0