Compare Mistral Devstral Small 1.1 by Mistral AI against GPT-5.4 Nano by OpenAI, tested across 53 shared challenges. Updated April 2026.
Mistral Devstral Small 1.1 and GPT-5.4 Nano are both competitive models. Mistral Devstral Small 1.1 costs $0.1/M input tokens vs $0.2/M for GPT-5.4 Nano. Compare their real outputs side by side below.
Mistral Devstral Small 1.1 is made by mistral while GPT-5.4 Nano is from openai. On pricing, Mistral Devstral Small 1.1 costs $0.1/M input tokens vs $0.2/M for GPT-5.4 Nano.
No community votes yet. On paper, GPT-5.4 Nano has the edge — newer, bigger context window, major provider backing.
Mistral Devstral Small 1.1 is 4.2x cheaper per token — worth considering if cost matters.
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 Mistral Devstral Small 1.1 by Mistral AI against GPT-5.4 Nano by OpenAI, tested across 53 shared challenges. Updated April 2026.
Mistral Devstral Small 1.1 and GPT-5.4 Nano are both competitive models. Mistral Devstral Small 1.1 costs $0.1/M input tokens vs $0.2/M for GPT-5.4 Nano. Compare their real outputs side by side below.
Mistral Devstral Small 1.1 is made by mistral while GPT-5.4 Nano is from openai. On pricing, Mistral Devstral Small 1.1 costs $0.1/M input tokens vs $0.2/M for GPT-5.4 Nano.
No community votes yet. On paper, GPT-5.4 Nano has the edge — newer, bigger context window, major provider backing.
Mistral Devstral Small 1.1 is 4.2x cheaper per token — worth considering if cost matters.
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.

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48 fights queued
36+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy