GPT-4.1 Nano vs GPT-5 Pro
Compare GPT-4.1 Nano and GPT-5 Pro, both from OpenAI, context windows of 1.0M vs 400K, tested across 42 shared challenges.
Our Verdict
GPT-5 Pro
GPT-4.1 NanoRunner-up
No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer.
GPT-4.1 Nano is 300x 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
150× cheaper
Output
$0.40
300× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
GPT-4.1 Nano is cheaper on both — 150× input, 300× output
Writing DNA
Style Comparison
Similarity
39%
GPT-4.1 Nano uses 561.5x more bold
GPT-4.1 Nano
GPT-5 Pro
57%Vocabulary65%
25wSentence Length15w
0.72Hedging0.32
5.6Bold0.0
4.9Lists2.9
0.00Emoji0.00
0.71Headings0.00
0.22Transitions0.01
Based on 24 + 11 text responses
Research
What we learned reading every model
FAQ
Common questions
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