Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 63.2% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. Overall, Grok-4 Heavy is the stronger choice for coding tasks.
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.
Microsoft
Phi-4 Mini was created as an even more compact variant of Phi-4, designed to bring fourth-generation capabilities to the smallest possible footprint. Built for extreme efficiency scenarios, it enables AI capabilities on devices and applications where resources are severely constrained.
5 months newer

Phi 4 Mini
Microsoft
2025-02-01

Grok-4 Heavy
xAI
2025-07-09
Average performance across 1 common benchmarks

Grok-4 Heavy

Phi 4 Mini
Phi 4 Mini
2024-06-01
Grok-4 Heavy
2024-12-31
Available providers and their performance metrics

Grok-4 Heavy

Phi 4 Mini

Grok-4 Heavy

Phi 4 Mini