Claude Opus 4 vs Grok Code Fast 1
Compare Claude Opus 4 by Anthropic against Grok Code Fast 1 by xAI, in 5 community votes, claude opus 4 wins 80% of head-to-head duels, context windows of 200K vs 256K, tested across 53 shared challenges.
Image Generation: Claude Opus 4 wins 100% of votes
Our Verdict
Claude Opus 4Winner
Grok Code Fast 1Runner-up
Pick Claude Opus 4. In 5 blind votes, Claude Opus 4 wins 80% of the time. That's not luck.
Claude Opus 4 particularly excels in Image Generation. Grok Code Fast 1 is 50x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Opus 4
Input
$15.00
Output
$75.00
Grok Code Fast 1
Input
$0.20
75× cheaper
Output
$1.50
50× cheaper
Grok Code Fast 1 is cheaper on both — 75× input, 50× output
Writing DNA
Style Comparison
Similarity
50%
Claude Opus 4 uses 3.6x more lists
Claude Opus 4
Grok Code Fast 1
64%Vocabulary60%
62wSentence Length17w
0.52Hedging0.97
4.4Bold2.8
9.1Lists2.5
0.11Emoji0.06
1.87Headings0.89
0.27Transitions0.11
Based on 16 + 23 text responses
Research
What we learned reading every model
FAQ
