Claude Sonnet 4.6 vs xAI: Grok 4.5
Compare Claude Sonnet 4.6 by Anthropic against xAI: Grok 4.5 by xAI, context windows of 1.0M vs 500K, tested across 53 shared challenges.
Our Verdict
Claude Sonnet 4.6
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 Sonnet 4.6
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
37%
Claude Sonnet 4.6 uses 4.4x more headings
Claude Sonnet 4.6
xAI: Grok 4.5
56%Vocabulary61%
36wSentence Length16w
0.53Hedging0.23
5.1Bold2.5
3.4Lists2.4
0.19Emoji0.09
2.10Headings0.48
0.02Transitions0.06
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
