GPT-5 Mini vs Grok 3
Compare GPT-5 Mini by OpenAI against Grok 3 by xAI, tested across 53 shared challenges. Updated May 2026.
Which is better, GPT-5 Mini or Grok 3?
GPT-5 Mini and Grok 3 are both competitive models. Compare their real outputs side by side below.
Key Differences Between GPT-5 Mini and Grok 3
GPT-5 Mini is made by openai while Grok 3 is from xai.
API pricing
Per 1M tokens
GPT-5 Mini
Input
$0.25
Output
$2.00
Grok 3
Input
—
Output
—
Our Verdict
GPT-5 Mini
Grok 3
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
62%
Grok 3 uses 246.4x more bold
GPT-5 Mini
Grok 3
62%Vocabulary49%
21wSentence Length18w
0.16Hedging0.94
0.0Bold2.5
3.4Lists3.0
0.00Emoji0.04
0.00Headings0.65
0.05Transitions0.08
Based on 15 + 17 text responses
FAQ
