Mistral Large vs OpenAI o3
Compare Mistral Large by Mistral AI against OpenAI o3 by OpenAI, tested across 53 shared challenges. Updated May 2026.
Which is better, Mistral Large or OpenAI o3?
Mistral Large and OpenAI o3 are both competitive models. Mistral Large costs $8/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Mistral Large and OpenAI o3
Mistral Large is made by mistral while OpenAI o3 is from openai. On pricing, Mistral Large costs $8/M input tokens vs $10/M for OpenAI o3.
API pricing
Per 1M tokens
Mistral Large
Input
$8.00
1.3× cheaper
Output
$24.00
1.7× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Mistral Large is cheaper on both — 1.3× input, 1.7× output
Our Verdict
OpenAI o3
Mistral LargeRunner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, newer, major provider backing.
Slight edge
Writing DNA
Style Comparison
Similarity
43%
Mistral Large uses 30.6x more emoji
Mistral Large
OpenAI o3
49%Vocabulary68%
19wSentence Length14w
0.86Hedging0.26
8.9Bold0.7
5.4Lists3.0
0.31Emoji0.00
1.01Headings0.38
0.10Transitions0.12
Based on 16 + 16 text responses
FAQ
