Gemini 2.5 Pro Preview 06-05 vs xAI: Grok 4 Fast (free)
Compare Gemini 2.5 Pro Preview 06-05 by Google AI against xAI: Grok 4 Fast (free) by xAI, context windows of 1.0M vs 2.0M, tested across 25 shared challenges.
Our Verdict
Gemini 2.5 Pro Preview 06-05
xAI: Grok 4 Fast (free)
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
API pricing
Cost per 1M tokens
Gemini 2.5 Pro Preview 06-05
Input
$1.25
Output
$10.00
xAI: Grok 4 Fast (free)
Input
$0.000
Output
$0.000
Writing DNA
Style Comparison
Similarity
33%
xAI: Grok 4 Fast (free) uses 5.5x more transitions
Gemini 2.5 Pro Preview 06-05
xAI: Grok 4 Fast (free)
51%Vocabulary65%
15wSentence Length13w
0.31Hedging0.56
4.8Bold1.4
4.1Lists2.5
0.00Emoji0.00
0.98Headings1.58
0.05Transitions0.28
Based on 20 + 14 text responses
Research
What we learned reading every model
FAQ
