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  5. Devstral 2 2512vsLlama 3.1 405B
Updated Dec 2025

Devstral 2 2512vsLlama 3.1 405B

Devstral 2 2512 is the newer model, released after Llama 3.1 405B.

Devstral 2 2512 and Llama 3.1 405B compared across 7 shared prompts
SpecDevstral 2 2512Llama 3.1 405B
Input price—$2.7/M tokens
Output price—$3.1/M tokens
Context window—128K tokens
WeightsOpenOpen
Free API (OpenRouter)NoNo
ReleasedDec 2025Jul 2024
Our Verdict
Devstral 2 2512
Devstral 2 2512
Llama 3.1 405B
Llama 3.1 405B

Not enough votes to call it. On the specs, nothing separates them.

Too close to call
API pricing

Cost per 1M tokens

Devstral 2 2512
Input
—
Output
—
Llama 3.1 405B
Input
$2.70
Output
$3.10
Where to run it

1 host

Devstral 2 25121 host
HostInOutContextUptime
Mistral$0.40 in·$2.00 out·262k·100% up
Llama 3.1 405B

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.

Writing DNA

Style Comparison

Similarity
36%

Devstral 2 2512 uses 877.7x more bold

Devstral 2 2512
Llama 3.1 405B
56%Vocabulary55%
14wSentence Length15w
0.51Hedging0.41
8.8Bold0.0
5.3Lists1.9
0.31Emoji0.03
1.11Headings0.00
0.18Transitions0.16
Based on 14 + 5 text responses
Research

What we learned reading every model

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