Claude Opus 5 vs Mistral Devstral Medium
Compare Claude Opus 5 by Anthropic against Mistral Devstral Medium by Mistral AI, tested across 54 shared challenges.
Our Verdict
Claude Opus 5
Mistral Devstral MediumRunner-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 Medium is 13x 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 Medium
Input
$0.40
13× cheaper
Output
$2.00
13× cheaper
Mistral Devstral Medium is cheaper on both — 13× input, 13× output
Writing DNA
Style Comparison
Similarity
39%
Claude Opus 5 uses 1.7x more emoji
Claude Opus 5
Mistral Devstral Medium
54%Vocabulary50%
21wSentence Length17w
0.40Hedging0.56
3.9Bold4.5
1.9Lists5.3
0.02Emoji0.00
0.71Headings0.19
0.05Transitions0.32
Based on 27 + 21 text responses
Research
What we learned reading every model
FAQ
