Mistral Small 4 vs OpenAI o3
Compare Mistral Small 4 by Mistral AI against OpenAI o3 by OpenAI, tested across 53 shared challenges.
Our Verdict
OpenAI o3
Mistral Small 4Runner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, major provider backing.
Mistral Small 4 is 67x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Mistral Small 4
Input
$0.15
67× cheaper
Output
$0.60
67× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Mistral Small 4 is cheaper on both — 67× input, 67× output
Writing DNA
Style Comparison
Similarity
34%
Mistral Small 4 uses 19.0x more emoji
Mistral Small 4
OpenAI o3
50%Vocabulary68%
18wSentence Length14w
0.58Hedging0.26
9.0Bold0.7
5.6Lists3.0
0.19Emoji0.00
1.10Headings0.38
0.12Transitions0.12
Based on 23 + 16 text responses
Research
What we learned reading every model
FAQ
