GPT-5.4 vs OpenAI o4-mini
Compare GPT-5.4 and OpenAI o4-mini, both from OpenAI, tested across 53 shared challenges.
Our Verdict
GPT-5.4
OpenAI o4-miniRunner-up
No community votes yet. On paper, GPT-5.4 has the edge — bigger model tier, newer, bigger context window.
OpenAI o4-mini is 3.4x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.4
Input
$2.50
Output
$15.00
OpenAI o4-mini
Input
$1.10
2.3× cheaper
Output
$4.40
3.4× cheaper
OpenAI o4-mini is cheaper on both — 2.3× input, 3.4× output
Writing DNA
Style Comparison
Similarity
35%
GPT-5.4 uses 406.1x more bold
GPT-5.4
OpenAI o4-mini
54%Vocabulary73%
28wSentence Length15w
0.69Hedging0.18
4.1Bold0.0
8.1Lists2.1
0.00Emoji0.00
1.84Headings0.00
0.02Transitions0.02
Based on 22 + 10 text responses
Research
What we learned reading every model
FAQ
