GPT-4o mini vs GPT-5
Compare GPT-4o mini and GPT-5, both from OpenAI, context windows of 128K vs 400K, tested across 52 shared challenges.
Our Verdict
GPT-5
GPT-4o miniRunner-up
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, newer, bigger context window.
GPT-4o mini is 17x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-4o mini
Input
$0.15
8.3× cheaper
Output
$0.60
17× cheaper
GPT-5
Input
$1.25
Output
$10.00
GPT-4o mini is cheaper on both — 8.3× input, 17× output
Writing DNA
Style Comparison
Similarity
38%
GPT-4o mini uses 20.4x more bold
GPT-4o mini
GPT-5
54%Vocabulary65%
18wSentence Length13w
0.84Hedging0.20
3.8Bold0.2
3.3Lists4.6
0.00Emoji0.00
1.03Headings0.16
0.23Transitions0.03
Based on 22 + 16 text responses
Research
What we learned reading every model
FAQ
