Claude Sonnet 4 vs Grok Code Fast 1
Compare Claude Sonnet 4 by Anthropic against Grok Code Fast 1 by xAI, in 204 community votes, claude sonnet 4 wins 69% of head-to-head duels, context windows of 200K vs 256K, tested across 54 shared challenges.
Web Design: Claude Sonnet 4 wins 60% of votes
Image Generation: Claude Sonnet 4 wins 94% of votes
Reasoning: Grok Code Fast 1 wins 73% of votes
Analysis: Grok Code Fast 1 wins 56% of votes
Conversation: Claude Sonnet 4 wins 83% of votes
Our Verdict
Claude Sonnet 4Winner
Grok Code Fast 1Runner-up
Pick Claude Sonnet 4. In 204 blind votes, Claude Sonnet 4 wins 69% of the time. That's not luck.
Pick Claude Sonnet 4 for Image Generation, Conversation, Web Design. Pick Grok Code Fast 1 for Reasoning, Analysis. Grok Code Fast 1 is 10x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
Grok Code Fast 1
Input
$0.20
15× cheaper
Output
$1.50
10× cheaper
Grok Code Fast 1 is cheaper on both — 15× input, 10× output
Writing DNA
Style Comparison
Similarity
38%
Claude Sonnet 4 uses 14.7x more emoji
Claude Sonnet 4
Grok Code Fast 1
62%Vocabulary60%
111wSentence Length17w
0.40Hedging0.97
5.0Bold2.8
9.3Lists2.5
0.88Emoji0.06
2.16Headings0.89
0.33Transitions0.11
Based on 17 + 23 text responses
Research
What we learned reading every model
FAQ
