Gemini 3 Pro Preview vs OpenAI o4-mini
Compare Gemini 3 Pro Preview by Google AI against OpenAI o4-mini by OpenAI, tested across 51 shared challenges. Updated May 2026.
Which is better, Gemini 3 Pro Preview or OpenAI o4-mini?
Gemini 3 Pro Preview and OpenAI o4-mini are both competitive models. Compare their real outputs side by side below.
Key Differences Between Gemini 3 Pro Preview and OpenAI o4-mini
Gemini 3 Pro Preview is made by google while OpenAI o4-mini is from openai.
API pricing
Per 1M tokens
Gemini 3 Pro Preview
Input
—
Output
—
OpenAI o4-mini
Input
$1.10
Output
$4.40
Our Verdict
Gemini 3 Pro Preview
OpenAI o4-miniRunner-up
No community votes yet. On paper, Gemini 3 Pro Preview has the edge — bigger model tier, newer.
Too close to call
Writing DNA
Style Comparison
Similarity
42%
Gemini 3 Pro Preview uses 768.4x more bold
Gemini 3 Pro Preview
OpenAI o4-mini
58%Vocabulary73%
17wSentence Length15w
0.37Hedging0.18
7.7Bold0.0
4.8Lists2.1
0.00Emoji0.00
0.90Headings0.00
0.25Transitions0.02
Based on 23 + 10 text responses
FAQ
