GPT-5.1-Codex-Mini vs Mistral Medium 3
Compare GPT-5.1-Codex-Mini by OpenAI against Mistral Medium 3 by Mistral AI, context windows of 400K vs 131K, tested across 55 shared challenges. Updated April 2026.
Which is better, GPT-5.1-Codex-Mini or Mistral Medium 3?
GPT-5.1-Codex-Mini and Mistral Medium 3 are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.4/M for Mistral Medium 3. Context windows: 400K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1-Codex-Mini and Mistral Medium 3
GPT-5.1-Codex-Mini is made by openai while Mistral Medium 3 is from mistral. GPT-5.1-Codex-Mini has a 400K token context window compared to Mistral Medium 3's 131K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.4/M for Mistral Medium 3.
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, newer, bigger context window, major provider backing.
Mistral Medium 3 is 3.0x cheaper per token — worth considering if cost matters.
Style Comparison
Mistral Medium 3 uses 6.0x more emoji
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
