GPT-5.4 Nano vs OpenAI o3
Compare GPT-5.4 Nano and OpenAI o3, both from OpenAI, tested across 53 shared challenges.
Our Verdict
GPT-5.4 Nano
OpenAI o3
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 32x 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
50× cheaper
Output
$1.25
32× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
GPT-5.4 Nano is cheaper on both — 50× input, 32× output
Writing DNA
Style Comparison
Similarity
42%
GPT-5.4 Nano
OpenAI o3
51%Vocabulary68%
21wSentence Length14w
0.58Hedging0.26
7.1Bold0.7
5.5Lists3.0
0.01Emoji0.00
1.39Headings0.38
0.05Transitions0.12
Based on 23 + 16 text responses
Research
What we learned reading every model
FAQ
