Grok 3 vs OpenAI o4-mini
Compare Grok 3 by xAI against OpenAI o4-mini by OpenAI, tested across 53 shared challenges. Updated May 2026.
Which is better, Grok 3 or OpenAI o4-mini?
Grok 3 and OpenAI o4-mini are both competitive models. Compare their real outputs side by side below.
Key Differences Between Grok 3 and OpenAI o4-mini
Grok 3 is made by xai while OpenAI o4-mini is from openai.
API pricing
Per 1M tokens
Grok 3
Input
—
Output
—
OpenAI o4-mini
Input
$1.10
Output
$4.40
Our Verdict
Grok 3
OpenAI o4-mini
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
35%
Grok 3 uses 246.4x more bold
Grok 3
OpenAI o4-mini
49%Vocabulary73%
18wSentence Length15w
0.94Hedging0.18
2.5Bold0.0
3.0Lists2.1
0.04Emoji0.00
0.65Headings0.00
0.08Transitions0.02
Based on 17 + 10 text responses
FAQ
