Claude 3 Sonnet vs xAI: Grok 4.5
Compare Claude 3 Sonnet by Anthropic against xAI: Grok 4.5 by xAI, tested across 13 shared challenges.
Our Verdict
Claude 3 Sonnet
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
Claude 3 Sonnet
Input
$3.00
Output
$15.00
xAI: Grok 4.5
Input
$2.00
1.5× cheaper
Output
$6.00
2.5× cheaper
xAI: Grok 4.5 is cheaper on both — 1.5× input, 2.5× output
Writing DNA
Style Comparison
Similarity
50%
xAI: Grok 4.5 uses 245.4x more bold
Claude 3 Sonnet
xAI: Grok 4.5
48%Vocabulary61%
14wSentence Length16w
0.32Hedging0.23
0.0Bold2.5
3.6Lists2.4
0.00Emoji0.09
0.00Headings0.48
0.38Transitions0.06
Based on 4 + 27 text responses
Research
What we learned reading every model
FAQ
