GPT-5.1 Chat vs Grok 3 Beta
Compare GPT-5.1 Chat by OpenAI against Grok 3 Beta by xAI, context windows of 128K vs 131K, tested across 53 shared challenges.
Our Verdict
GPT-5.1 Chat
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.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.1 Chat
Input
$1.25
1.6× cheaper
Output
$10.00
Grok 3 Beta
Input
$2.00
Output
$4.00
2.5× cheaper
GPT-5.1 Chat wins input (1.6× cheaper)·Grok 3 Beta wins output (2.5× cheaper)
Writing DNA
Style Comparison
Similarity
34%
Grok 3 Beta uses 52.1x more headings
GPT-5.1 Chat
Grok 3 Beta
73%Vocabulary48%
18wSentence Length19w
0.45Hedging0.67
1.1Bold3.1
2.4Lists5.5
0.00Emoji0.00
0.00Headings0.52
0.06Transitions0.28
Based on 15 + 23 text responses
Research
What we learned reading every model
FAQ
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