Gemini 2.5 Pro (I/O Edition) vs xAI: Grok 4
Compare Gemini 2.5 Pro (I/O Edition) by Google AI against xAI: Grok 4 by xAI, in 27 community votes, gemini 2.5 pro (i/o edition) wins 78% of head-to-head duels, tested across 40 shared challenges.
Web Design: Gemini 2.5 Pro (I/O Edition) wins 70% of votes
Image Generation: Gemini 2.5 Pro (I/O Edition) wins 83% of votes
Reasoning: Gemini 2.5 Pro (I/O Edition) wins 100% of votes
Conversation: Gemini 2.5 Pro (I/O Edition) and xAI: Grok 4 are tied
Our Verdict
Gemini 2.5 Pro (I/O Edition)Winner
xAI: Grok 4Runner-up
Pick Gemini 2.5 Pro (I/O Edition). In 27 blind votes, Gemini 2.5 Pro (I/O Edition) wins 78% of the time. That's not luck.
Gemini 2.5 Pro (I/O Edition) particularly excels in Reasoning, Image Generation, Web Design.
Clear winner
API pricing
Cost per 1M tokens
Gemini 2.5 Pro (I/O Edition)
Input
$1.25
2.4× cheaper
Output
$10.00
1.5× cheaper
xAI: Grok 4
Input
$3.00
Output
$15.00
Gemini 2.5 Pro (I/O Edition) is cheaper on both — 2.4× input, 1.5× output
Writing DNA
Style Comparison
Similarity
58%
xAI: Grok 4 uses 7.0x more emoji
Gemini 2.5 Pro (I/O Edition)
xAI: Grok 4
58%Vocabulary53%
16wSentence Length18w
0.38Hedging0.67
5.8Bold2.7
5.0Lists2.7
0.00Emoji0.07
0.63Headings0.86
0.01Transitions0.04
Based on 16 + 21 text responses
Research
What we learned reading every model
FAQ
