Mistral Large 3 2512 vs o3 Mini

Compare Mistral Large 3 2512 by Mistral AI against o3 Mini by OpenAI, tested across 54 shared challenges. Updated April 2026.

Which is better, Mistral Large 3 2512 or o3 Mini?

Mistral Large 3 2512 and o3 Mini are both competitive models. Compare their real outputs side by side below.

Key Differences Between Mistral Large 3 2512 and o3 Mini

Mistral Large 3 2512 is made by mistral while o3 Mini is from openai.

Our Verdict
Mistral Large 3 2512
Mistral Large 3 2512
o3 Mini
o3 MiniRunner-up

No community votes yet. On paper, Mistral Large 3 2512 has the edge — bigger model tier, newer.

Too close to call
Writing DNA

Style Comparison

Similarity
89%

Mistral Large 3 2512 uses 49.8x more emoji

Mistral Large 3 2512
o3 Mini
50%Vocabulary65%
20wSentence Length17w
0.48Hedging0.74
11.6Bold3.9
5.7Lists1.7
0.50Emoji0.00
1.18Headings0.47
0.06Transitions0.38
Based on 24 + 12 text responses
vs

Ask them anything yourself

Mistral Large 3 2512o3 Mini

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

Common questions