Mistral Devstral Medium vs OpenAI: GPT-5.6 Luna
Compare Mistral Devstral Medium by Mistral AI against OpenAI: GPT-5.6 Luna by OpenAI, tested across 54 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Luna
Mistral Devstral MediumRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Luna has the edge — newer, bigger context window, major provider backing.
Mistral Devstral Medium is 3.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Mistral Devstral Medium
Input
$0.40
2.5× cheaper
Output
$2.00
3.0× cheaper
OpenAI: GPT-5.6 Luna
Input
$1.00
Output
$6.00
Mistral Devstral Medium is cheaper on both — 2.5× input, 3.0× output
Writing DNA
Style Comparison
Similarity
62%
OpenAI: GPT-5.6 Luna uses 6.3x more headings
Mistral Devstral Medium
OpenAI: GPT-5.6 Luna
50%Vocabulary59%
17wSentence Length19w
0.56Hedging0.84
4.5Bold2.7
5.3Lists4.5
0.00Emoji0.00
0.19Headings1.20
0.32Transitions0.10
Based on 21 + 27 text responses
Research
What we learned reading every model
FAQ
