Claude Sonnet 4.5 vs Grok 4.20 Multi-Agent Beta
Compare Claude Sonnet 4.5 by Anthropic against Grok 4.20 Multi-Agent Beta by xAI, context windows of 200K vs 2.0M, tested across 42 shared challenges.
Our Verdict
Grok 4.20 Multi-Agent Beta
Claude Sonnet 4.5Runner-up
No community votes yet. On paper, Grok 4.20 Multi-Agent Beta has the edge — bigger model tier, newer, bigger context window.
Slight edge
API pricing
Cost per 1M tokens
Claude Sonnet 4.5
Input
$3.00
Output
$15.00
Grok 4.20 Multi-Agent Beta
Input
$2.00
1.5× cheaper
Output
$6.00
2.5× cheaper
Grok 4.20 Multi-Agent Beta is cheaper on both — 1.5× input, 2.5× output
Writing DNA
Style Comparison
Similarity
29%
Claude Sonnet 4.5 uses 45.2x more emoji
Claude Sonnet 4.5
Grok 4.20 Multi-Agent Beta
64%Vocabulary59%
94wSentence Length16w
0.48Hedging0.41
4.9Bold2.7
8.0Lists2.4
0.45Emoji0.00
1.91Headings0.26
0.07Transitions0.02
Based on 20 + 23 text responses
Research
What we learned reading every model
FAQ
