Mistral Devstral Small 1.1 vs GPT-5.1 Codex Max
Compare Mistral Devstral Small 1.1 by Mistral AI against GPT-5.1 Codex Max by OpenAI, tested across 53 shared challenges.
Our Verdict
GPT-5.1 Codex Max
Mistral Devstral Small 1.1Runner-up
No community votes yet. On paper, GPT-5.1 Codex Max has the edge — bigger model tier, newer, major provider backing.
Slight edge
API pricing
Cost per 1M tokens
Mistral Devstral Small 1.1
Input
$0.10
Output
$0.30
GPT-5.1 Codex Max
Input
—
Output
—
Writing DNA
Style Comparison
Similarity
49%
Mistral Devstral Small 1.1 uses 13.1x more transitions
Mistral Devstral Small 1.1
GPT-5.1 Codex Max
50%Vocabulary60%
17wSentence Length16w
0.56Hedging0.36
4.3Bold2.3
5.7Lists4.2
0.00Emoji0.00
0.05Headings0.12
0.34Transitions0.03
Based on 21 + 13 text responses
Research
What we learned reading every model
FAQ
