Compare GPT-5 Mini by OpenAI against Mistral Small 4 by Mistral AI, tested across 53 shared challenges. Updated April 2026.
GPT-5 Mini and Mistral Small 4 are both competitive models. GPT-5 Mini costs $0.25/M input tokens vs $0.15/M for Mistral Small 4. Compare their real outputs side by side below.
GPT-5 Mini is made by openai while Mistral Small 4 is from mistral. On pricing, GPT-5 Mini costs $0.25/M input tokens vs $0.15/M for Mistral Small 4.
No community votes yet. On paper, GPT-5 Mini has the edge — bigger model tier, major provider backing.
Mistral Small 4 is 3.3x cheaper per token — worth considering if cost matters.
Mistral Small 4 uses 899.3x more bold
Ask 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.

Compare GPT-5 Mini by OpenAI against Mistral Small 4 by Mistral AI, tested across 53 shared challenges. Updated April 2026.
GPT-5 Mini and Mistral Small 4 are both competitive models. GPT-5 Mini costs $0.25/M input tokens vs $0.15/M for Mistral Small 4. Compare their real outputs side by side below.
GPT-5 Mini is made by openai while Mistral Small 4 is from mistral. On pricing, GPT-5 Mini costs $0.25/M input tokens vs $0.15/M for Mistral Small 4.
No community votes yet. On paper, GPT-5 Mini has the edge — bigger model tier, major provider backing.
Mistral Small 4 is 3.3x cheaper per token — worth considering if cost matters.
Mistral Small 4 uses 899.3x more bold
Ask 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.
