Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 40.3% higher average benchmark score. Overall, Grok-4 Heavy is the stronger choice for coding tasks.
OpenAI
GPT-4.1 represents an iterative improvement in the GPT-4 series, developed to refine the foundational capabilities established by GPT-4. Built to incorporate learnings and optimizations from the deployment of previous versions, it continues the evolution of OpenAI's flagship model line with enhanced reliability and performance.
xAI
Grok 4 Heavy was created as a larger, more capable variant of Grok 4, designed to provide maximum reasoning depth and analytical capability. Built for the most demanding applications requiring sophisticated problem-solving, it represents xAI's flagship offering in the fourth generation.
2 months newer

GPT-4.1
OpenAI
2025-04-14

Grok-4 Heavy
xAI
2025-07-09
Context window and performance specifications
Average performance across 3 common benchmarks

GPT-4.1

Grok-4 Heavy
GPT-4.1
2024-06-01
Grok-4 Heavy
2024-12-31
Available providers and their performance metrics

GPT-4.1
OpenAI

Grok-4 Heavy

GPT-4.1

Grok-4 Heavy

GPT-4.1

Grok-4 Heavy