o1 vs Mistral Large 2

Compare o1 by OpenAI against Mistral Large 2 by Mistral AI, context windows of 128K vs 128K, tested across 18 shared challenges. Updated April 2026.

Which is better, o1 or Mistral Large 2?

o1 and Mistral Large 2 are both competitive models. o1 costs $15/M input tokens vs $8/M for Mistral Large 2. Context windows: 128K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between o1 and Mistral Large 2

o1 is made by openai while Mistral Large 2 is from mistral. o1 has a 128K token context window compared to Mistral Large 2's 128K. On pricing, o1 costs $15/M input tokens vs $8/M for Mistral Large 2.

Our Verdict
o1
o1
Mistral Large 2
Mistral Large 2

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

Too close to call
Writing DNA

Style Comparison

Similarity
95%

Mistral Large 2 uses 79.6x more emoji

o1
Mistral Large 2
64%Vocabulary43%
16wSentence Length21w
0.76Hedging0.39
5.0Bold14.4
2.6Lists7.4
0.00Emoji0.80
0.44Headings1.41
0.40Transitions0.01
Based on 13 + 10 text responses
vs

Ask them anything yourself

o1Mistral Large 2

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
Free preview13 of 58 slides
FAQ

Common questions