GPT-4o mini vs OpenAI o3
Compare GPT-4o mini and OpenAI o3, both from OpenAI, tested across 54 shared challenges.
Our Verdict
OpenAI o3
GPT-4o miniRunner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, newer.
GPT-4o mini is 67x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4o mini
Input
$0.15
67× cheaper
Output
$0.60
67× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
GPT-4o mini is cheaper on both — 67× input, 67× output
Writing DNA
Style Comparison
Similarity
34%
GPT-4o mini uses 5.5x more bold
GPT-4o mini
OpenAI o3
54%Vocabulary68%
18wSentence Length14w
0.84Hedging0.26
3.8Bold0.7
3.3Lists3.0
0.00Emoji0.00
1.03Headings0.38
0.23Transitions0.12
Based on 22 + 16 text responses
Research
What we learned reading every model
FAQ
