Mistral Devstral Medium vs OpenAI o3
Compare Mistral Devstral Medium by Mistral AI against OpenAI o3 by OpenAI, tested across 54 shared challenges.
Our Verdict
OpenAI o3
Mistral Devstral MediumRunner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, major provider backing.
Mistral Devstral Medium is 20x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Mistral Devstral Medium
Input
$0.40
25× cheaper
Output
$2.00
20× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Mistral Devstral Medium is cheaper on both — 25× input, 20× output
Writing DNA
Style Comparison
Similarity
33%
Mistral Devstral Medium uses 6.5x more bold
Mistral Devstral Medium
OpenAI o3
50%Vocabulary68%
17wSentence Length14w
0.56Hedging0.26
4.5Bold0.7
5.3Lists3.0
0.00Emoji0.00
0.19Headings0.38
0.32Transitions0.12
Based on 21 + 16 text responses
Research
What we learned reading every model
FAQ
