Gemini 3.5 Flash vs xAI: Grok 4.5
Compare Gemini 3.5 Flash by Google AI against xAI: Grok 4.5 by xAI, context windows of 1.0M vs 500K, tested across 54 shared challenges.
Our Verdict
Gemini 3.5 Flash
xAI: Grok 4.5
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 3.5 Flash
Input
$1.50
1.3× cheaper
Output
$9.00
xAI: Grok 4.5
Input
$2.00
Output
$6.00
1.5× cheaper
Gemini 3.5 Flash wins input (1.3× cheaper)·xAI: Grok 4.5 wins output (1.5× cheaper)
Writing DNA
Style Comparison
Similarity
57%
xAI: Grok 4.5 uses 9.0x more emoji
Gemini 3.5 Flash
xAI: Grok 4.5
59%Vocabulary61%
18wSentence Length16w
0.16Hedging0.23
4.4Bold2.5
3.0Lists2.4
0.00Emoji0.09
0.89Headings0.48
0.11Transitions0.06
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
