GPT-4.5 vs Grok 3 Beta
Compare GPT-4.5 by OpenAI against Grok 3 Beta by xAI, context windows of 128K vs 131K, tested across 25 shared challenges.
Our Verdict
GPT-4.5
Grok 3 Beta
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Grok 3 Beta is 38x 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 3 Beta
Input
$2.00
38× cheaper
Output
$4.00
38× cheaper
Grok 3 Beta is cheaper on both — 38× input, 38× output
Writing DNA
Style Comparison
Similarity
65%
GPT-4.5 uses 2.5x more headings
GPT-4.5
Grok 3 Beta
63%Vocabulary48%
16wSentence Length19w
0.57Hedging0.67
4.7Bold3.1
6.4Lists5.5
0.00Emoji0.00
1.30Headings0.52
0.54Transitions0.28
Based on 11 + 23 text responses
Research
What we learned reading every model
FAQ
Common questions
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