GPT-4.5 vs Grok 4.20 Multi-Agent Beta
Compare GPT-4.5 by OpenAI against Grok 4.20 Multi-Agent Beta by xAI, context windows of 128K vs 2.0M, tested across 24 shared challenges.
Our Verdict
Grok 4.20 Multi-Agent Beta
GPT-4.5Runner-up
No community votes yet. On paper, Grok 4.20 Multi-Agent Beta has the edge — newer, bigger context window.
Grok 4.20 Multi-Agent Beta is 25x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4.5
Input
$75.00
Output
$150.00
Grok 4.20 Multi-Agent Beta
Input
$2.00
38× cheaper
Output
$6.00
25× cheaper
Grok 4.20 Multi-Agent Beta is cheaper on both — 38× input, 25× output
Writing DNA
Style Comparison
Similarity
39%
GPT-4.5 uses 21.7x more transitions
GPT-4.5
Grok 4.20 Multi-Agent Beta
63%Vocabulary59%
16wSentence Length16w
0.57Hedging0.41
4.7Bold2.7
6.4Lists2.4
0.00Emoji0.00
1.30Headings0.26
0.54Transitions0.02
Based on 11 + 23 text responses
Research
What we learned reading every model
FAQ
