Mistral Large 2 vs OpenAI o3

Compare Mistral Large 2 by Mistral AI against OpenAI o3 by OpenAI, tested across 18 shared challenges. Updated April 2026.

Which is better, Mistral Large 2 or OpenAI o3?

Mistral Large 2 and OpenAI o3 are both competitive models. Mistral Large 2 costs $8/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.

Key Differences Between Mistral Large 2 and OpenAI o3

Mistral Large 2 is made by mistral while OpenAI o3 is from openai. On pricing, Mistral Large 2 costs $8/M input tokens vs $10/M for OpenAI o3.

Our Verdict
OpenAI o3
OpenAI o3
Mistral Large 2
Mistral Large 2Runner-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
95%

Mistral Large 2 uses 79.6x more emoji

Mistral Large 2
OpenAI o3
43%Vocabulary68%
21wSentence Length14w
0.39Hedging0.26
14.4Bold0.7
7.4Lists3.0
0.80Emoji0.00
1.41Headings0.38
0.01Transitions0.12
Based on 10 + 16 text responses
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Mistral Large 2OpenAI o3

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
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