GPT-5.1-Codex-Mini vs Mistral Large 2
Compare GPT-5.1-Codex-Mini by OpenAI against Mistral Large 2 by Mistral AI, context windows of 400K vs 128K, tested across 18 shared challenges. Updated April 2026.
Which is better, GPT-5.1-Codex-Mini or Mistral Large 2?
GPT-5.1-Codex-Mini and Mistral Large 2 are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $8/M for Mistral Large 2. Context windows: 400K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1-Codex-Mini and Mistral Large 2
GPT-5.1-Codex-Mini is made by openai while Mistral Large 2 is from mistral. GPT-5.1-Codex-Mini has a 400K token context window compared to Mistral Large 2's 128K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $8/M for Mistral Large 2.
Our Verdict
GPT-5.1-Codex-Mini
Mistral Large 2Runner-up
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, newer, bigger context window, major provider backing.
GPT-5.1-Codex-Mini is 4.0x cheaper per token — worth considering if cost matters.
Slight edge
Writing DNA
Style Comparison
Similarity
99%
Mistral Large 2 uses 79.6x more emoji
GPT-5.1-Codex-Mini
Mistral Large 2
65%Vocabulary43%
20wSentence Length21w
0.56Hedging0.39
3.3Bold14.4
3.4Lists7.4
0.00Emoji0.80
0.08Headings1.41
0.05Transitions0.01
Based on 13 + 10 text responses
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279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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