GPT-5.1-Codex-Mini vs Mistral Small 4
Compare GPT-5.1-Codex-Mini by OpenAI against Mistral Small 4 by Mistral AI, context windows of 400K vs 262K, tested across 53 shared challenges. Updated April 2026.
Which is better, GPT-5.1-Codex-Mini or Mistral Small 4?
GPT-5.1-Codex-Mini and Mistral Small 4 are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.15/M for Mistral Small 4. Context windows: 400K vs 262K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1-Codex-Mini and Mistral Small 4
GPT-5.1-Codex-Mini is made by openai while Mistral Small 4 is from mistral. GPT-5.1-Codex-Mini has a 400K token context window compared to Mistral Small 4's 262K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.15/M for Mistral Small 4.
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, bigger context window, major provider backing.
Mistral Small 4 is 10x cheaper per token — worth considering if cost matters.
Style Comparison
Mistral Small 4 uses 19.0x 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.
