Claude Opus 5 vs Mistral Devstral Small 1.1
Compare Claude Opus 5 by Anthropic against Mistral Devstral Small 1.1 by Mistral AI, tested across 54 shared challenges.
Our Verdict
Claude Opus 5
Mistral Devstral Small 1.1Runner-up
No community votes yet. On paper, Claude Opus 5 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Mistral Devstral Small 1.1 is 83x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Opus 5
Input
$5.00
Output
$25.00
Mistral Devstral Small 1.1
Input
$0.10
50× cheaper
Output
$0.30
83× cheaper
Mistral Devstral Small 1.1 is cheaper on both — 50× input, 83× output
Writing DNA
Style Comparison
Similarity
33%
Claude Opus 5 uses 1.7x more emoji
Claude Opus 5
Mistral Devstral Small 1.1
54%Vocabulary50%
21wSentence Length17w
0.40Hedging0.56
3.9Bold4.3
1.9Lists5.7
0.02Emoji0.00
0.71Headings0.05
0.05Transitions0.34
Based on 27 + 21 text responses
Research
What we learned reading every model
FAQ
