GPT-5.4 Nano vs Grok 4
Compare GPT-5.4 Nano by OpenAI against Grok 4 by xAI, context windows of 400K vs 256K, tested across 53 shared challenges.
Our Verdict
GPT-5.4 Nano
Grok 4
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT-5.4 Nano is 12x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.4 Nano
Input
$0.20
15× cheaper
Output
$1.25
12× cheaper
Grok 4
Input
$3.00
Output
$15.00
GPT-5.4 Nano is cheaper on both — 15× input, 12× output
Writing DNA
Style Comparison
Similarity
56%
Grok 4 uses 7.0x more emoji
GPT-5.4 Nano
Grok 4
51%Vocabulary53%
21wSentence Length18w
0.58Hedging0.67
7.1Bold2.7
5.5Lists2.7
0.01Emoji0.07
1.39Headings0.86
0.05Transitions0.04
Based on 23 + 21 text responses
Research
What we learned reading every model
FAQ
Common questions
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