Claude Opus 4.7 vs Grok Code Fast 1
Compare Claude Opus 4.7 by Anthropic against Grok Code Fast 1 by xAI, context windows of 1.0M vs 256K, tested across 54 shared challenges.
Our Verdict
Claude Opus 4.7
Grok Code Fast 1Runner-up
No community votes yet. On paper, Claude Opus 4.7 has the edge — bigger model tier, newer, bigger context window.
Grok Code Fast 1 is 17x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Opus 4.7
Input
$5.00
Output
$25.00
Grok Code Fast 1
Input
$0.20
25× cheaper
Output
$1.50
17× cheaper
Grok Code Fast 1 is cheaper on both — 25× input, 17× output
Writing DNA
Style Comparison
Similarity
53%
Claude Opus 4.7 uses 14.5x more emoji
Claude Opus 4.7
Grok Code Fast 1
64%Vocabulary60%
20wSentence Length17w
0.51Hedging0.97
4.6Bold2.8
3.8Lists2.5
0.86Emoji0.06
1.60Headings0.89
0.03Transitions0.11
Based on 27 + 23 text responses
Research
What we learned reading every model
FAQ
