Mistral Large 2 vs OpenAI o4-mini

Compare Mistral Large 2 by Mistral AI against OpenAI o4-mini by OpenAI, tested across 18 shared challenges. Updated April 2026.

Which is better, Mistral Large 2 or OpenAI o4-mini?

Mistral Large 2 and OpenAI o4-mini are both competitive models. Mistral Large 2 costs $8/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.

Key Differences Between Mistral Large 2 and OpenAI o4-mini

Mistral Large 2 is made by mistral while OpenAI o4-mini is from openai. On pricing, Mistral Large 2 costs $8/M input tokens vs $1.1/M for OpenAI o4-mini.

Our Verdict
Mistral Large 2
Mistral Large 2
OpenAI o4-mini
OpenAI o4-mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

OpenAI o4-mini is 5.5x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
86%

Mistral Large 2 uses 1437.6x more bold

Mistral Large 2
OpenAI o4-mini
43%Vocabulary73%
21wSentence Length15w
0.39Hedging0.18
14.4Bold0.0
7.4Lists2.1
0.80Emoji0.00
1.41Headings0.00
0.01Transitions0.02
Based on 10 + 10 text responses
vs

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Mistral Large 2OpenAI o4-mini

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%

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
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