Claude Opus 4.7 vs xAI: Grok 4.3
Compare Claude Opus 4.7 by Anthropic against xAI: Grok 4.3 by xAI, context windows of 1.0M vs 1.0M, tested across 54 shared challenges.
Our Verdict
Claude Opus 4.7
xAI: Grok 4.3Runner-up
No community votes yet. On paper, Claude Opus 4.7 has the edge — bigger model tier.
xAI: Grok 4.3 is 10x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4.7
Input
$5.00
Output
$25.00
xAI: Grok 4.3
Input
$1.25
4.0× cheaper
Output
$2.50
10× cheaper
xAI: Grok 4.3 is cheaper on both — 4.0× input, 10× output
Writing DNA
Style Comparison
Similarity
47%
Claude Opus 4.7 uses 86.2x more emoji
Claude Opus 4.7
xAI: Grok 4.3
64%Vocabulary62%
20wSentence Length16w
0.51Hedging0.46
4.6Bold2.3
3.8Lists2.5
0.86Emoji0.00
1.60Headings0.34
0.03Transitions0.14
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
