Gemini 1.5 Pro vs xAI: Grok 4.5
Compare Gemini 1.5 Pro by Google AI against xAI: Grok 4.5 by xAI, context windows of 1.0M vs 500K, tested across 18 shared challenges.
Our Verdict
Gemini 1.5 Pro
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 1.5 Pro
Input
$3.50
Output
$10.50
xAI: Grok 4.5
Input
$2.00
1.8× cheaper
Output
$6.00
1.8× cheaper
xAI: Grok 4.5 is cheaper on both — 1.8× input, 1.8× output
Writing DNA
Style Comparison
Similarity
48%
xAI: Grok 4.5 uses 9.0x more emoji
Gemini 1.5 Pro
xAI: Grok 4.5
61%Vocabulary61%
15wSentence Length16w
0.80Hedging0.23
3.7Bold2.5
3.3Lists2.4
0.00Emoji0.09
0.08Headings0.48
0.09Transitions0.06
Based on 8 + 27 text responses
Research
What we learned reading every model
FAQ
