Claude Sonnet 4.5 vs Grok 3 Beta
Compare Claude Sonnet 4.5 by Anthropic against Grok 3 Beta by xAI, in 2 community votes, claude sonnet 4.5 wins 100% of head-to-head duels, context windows of 200K vs 131K, tested across 43 shared challenges.
Our Verdict
Claude Sonnet 4.5Winner
Grok 3 BetaRunner-up
Pick Claude Sonnet 4.5. In 2 blind votes, Claude Sonnet 4.5 wins 100% of the time. That's not luck.
Grok 3 Beta is 3.8x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Sonnet 4.5
Input
$3.00
Output
$15.00
Grok 3 Beta
Input
$2.00
1.5× cheaper
Output
$4.00
3.8× cheaper
Grok 3 Beta is cheaper on both — 1.5× input, 3.8× output
Writing DNA
Style Comparison
Similarity
35%
Claude Sonnet 4.5 uses 45.2x more emoji
Claude Sonnet 4.5
Grok 3 Beta
64%Vocabulary48%
94wSentence Length19w
0.48Hedging0.67
4.9Bold3.1
8.0Lists5.5
0.45Emoji0.00
1.91Headings0.52
0.07Transitions0.28
Based on 20 + 23 text responses
Research
What we learned reading every model
FAQ
