Mistral Devstral Small 1.1 vs GPT-5.5
Compare Mistral Devstral Small 1.1 by Mistral AI against GPT-5.5 by OpenAI, tested across 54 shared challenges.
Our Verdict
GPT-5.5
Mistral Devstral Small 1.1Runner-up
No community votes yet. On paper, GPT-5.5 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Mistral Devstral Small 1.1 is 100x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Mistral Devstral Small 1.1
Input
$0.10
50× cheaper
Output
$0.30
100× cheaper
GPT-5.5
Input
$5.00
Output
$30.00
Mistral Devstral Small 1.1 is cheaper on both — 50× input, 100× output
Writing DNA
Style Comparison
Similarity
42%
GPT-5.5 uses 34.7x more headings
Mistral Devstral Small 1.1
GPT-5.5
50%Vocabulary58%
17wSentence Length18w
0.56Hedging0.74
4.3Bold2.9
5.7Lists5.1
0.00Emoji0.00
0.05Headings1.68
0.34Transitions0.03
Based on 21 + 26 text responses
Research
What we learned reading every model
FAQ
