Claude Sonnet 4.5 vs Mistral Devstral Medium
Compare Claude Sonnet 4.5 by Anthropic against Mistral Devstral Medium by Mistral AI, tested across 43 shared challenges.
Our Verdict
Claude Sonnet 4.5
Mistral Devstral MediumRunner-up
No community votes yet. On paper, Claude Sonnet 4.5 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Mistral Devstral Medium is 7.5x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Sonnet 4.5
Input
$3.00
Output
$15.00
Mistral Devstral Medium
Input
$0.40
7.5× cheaper
Output
$2.00
7.5× cheaper
Mistral Devstral Medium is cheaper on both — 7.5× input, 7.5× output
Writing DNA
Style Comparison
Similarity
40%
Claude Sonnet 4.5 uses 45.2x more emoji
Claude Sonnet 4.5
Mistral Devstral Medium
64%Vocabulary50%
94wSentence Length17w
0.48Hedging0.56
4.9Bold4.5
8.0Lists5.3
0.45Emoji0.00
1.91Headings0.19
0.07Transitions0.32
Based on 20 + 21 text responses
Research
What we learned reading every model
FAQ
