Mistral Medium 3 vs OpenAI o3
Compare Mistral Medium 3 by Mistral AI against OpenAI o3 by OpenAI, in 2 community votes, mistral medium 3 and openai o3 are closely matched, tested across 54 shared challenges.
Web Design: Mistral Medium 3 and OpenAI o3 are tied
Our Verdict
Mistral Medium 3
OpenAI o3
Genuinely even. Both are strong choices.
Mistral Medium 3 is 20x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Mistral Medium 3
Input
$0.40
25× cheaper
Output
$2.00
20× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Mistral Medium 3 is cheaper on both — 25× input, 20× output
Writing DNA
Style Comparison
Similarity
30%
Mistral Medium 3 uses 6.0x more emoji
Mistral Medium 3
OpenAI o3
57%Vocabulary68%
17wSentence Length14w
0.73Hedging0.26
8.6Bold0.7
6.5Lists3.0
0.06Emoji0.00
1.18Headings0.38
0.15Transitions0.12
Based on 15 + 16 text responses
Research
What we learned reading every model
FAQ
