GPT-4.1 Nano vs GPT-5
Compare GPT-4.1 Nano and GPT-5, both from OpenAI, context windows of 1.0M vs 400K, tested across 52 shared challenges.
Our Verdict
GPT-5
GPT-4.1 NanoRunner-up
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, newer.
GPT-4.1 Nano is 25x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4.1 Nano
Input
$0.10
13× cheaper
Output
$0.40
25× cheaper
GPT-5
Input
$1.25
Output
$10.00
GPT-4.1 Nano is cheaper on both — 13× input, 25× output
Writing DNA
Style Comparison
Similarity
46%
GPT-4.1 Nano uses 29.8x more bold
GPT-4.1 Nano
GPT-5
57%Vocabulary65%
25wSentence Length13w
0.72Hedging0.20
5.6Bold0.2
4.9Lists4.6
0.00Emoji0.00
0.71Headings0.16
0.22Transitions0.03
Based on 24 + 16 text responses
Research
What we learned reading every model
FAQ
