Mistral: Devstral 2 2512 vs GPT-5.3-Codex
Compare Mistral: Devstral 2 2512 by Mistral AI against GPT-5.3-Codex by OpenAI, tested across 34 shared challenges.
Our Verdict
GPT-5.3-Codex
Mistral: Devstral 2 2512Runner-up
No community votes yet. On paper, GPT-5.3-Codex has the edge — newer, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
Mistral: Devstral 2 2512
Input
—
Output
—
GPT-5.3-Codex
Input
$1.75
Output
$14.00
Writing DNA
Style Comparison
Similarity
50%
Mistral: Devstral 2 2512 uses 6.4x more transitions
Mistral: Devstral 2 2512
GPT-5.3-Codex
56%Vocabulary65%
14wSentence Length23w
0.51Hedging0.51
8.8Bold6.5
5.3Lists6.2
0.31Emoji0.16
1.11Headings1.90
0.18Transitions0.03
Based on 14 + 23 text responses
Research
What we learned reading every model
FAQ
