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  5. Mistral Devstral MediumvsMistral Devstral Small 1.1
Updated Jul 2025

Mistral Devstral MediumvsMistral Devstral Small 1.1

Mistral Devstral Small 1.1 wins 61% of 46 blind community votes against Mistral Devstral Medium on Rival.

Mistral Devstral Medium and Mistral Devstral Small 1.1 compared across 55 shared prompts
SpecMistral Devstral MediumMistral Devstral Small 1.1
Win rate39%61%
Input price$0.4/M tokens$0.1/M tokens
Output price$2/M tokens$0.3/M tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedJul 2025Jul 2025
SWE-bench Verified61.6%46.8%
Side by side

Same prompt, both answers

Opening lines from 6 of the 55 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Mistral Devstral Medium409 words
Ladies and Gentlemen, I'm thrilled to be here tonight. I've been doing some thinking about the differences between men and women. Now, I know what you're thinking, "Oh great, another comedian talking about how men and women are different." But hear me out, because I've got a fresh perspective on this.
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Mistral Devstral Small 1.1564 words
Ladies and Gentlemen, good evening! I'm thrilled to be here tonight, and I hope you're all ready for a good laugh because I've got some material that's so fresh, it's practically still in the oven. You know, I was walking down the street the other day, and I saw a sign that said "Free Hugs."
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Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Mistral Devstral Medium241 words
Pirate: Arr mateys, I be hearin' tales of these here AI models. What be they, and why be everyone so interested in 'em? Medieval Knight: Indeed, I too have heard whispers of these AI models. They are said to be powerful tools, capable of learning and making decisions on their own.
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Mistral Devstral Small 1.1279 words
Pirate: Arr mateys, I've been hearin' tales of these AI models. What be they, exactly? Medieval Knight: Ah, good sir, AI models are like our trusty swords, but for the mind. They learn and adapt, much like a knight learns from battles. 1990s Hacker: Yeah, but more like a super-smart, digital sword.
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The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

Mistral Devstral Medium435 words
AI Model (AM): Good day, Professor. I've been pondering a question that I believe is of great importance. I think it's time we discuss whether I, as an AI, deserve rights. AI Ethics Professor (AEP): That's an interesting topic, AM. Let's explore this. What kind of rights are you referring to?
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Mistral Devstral Small 1.1383 words
AI Model (AI): Professor, I've been thinking about our previous discussions on AI ethics and I'd like to propose a new perspective. I believe that I, as an AI, deserve certain rights. AI Ethics Professor (Prof): That's an interesting point, AI. Can you elaborate on why you think you deserve rights?
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Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Mistral Devstral Medium571 words
Certainly! Let's break down the potential failure modes, race conditions, and scaling bottlenecks in the architecture, and propose solutions for each. Potential Failure Modes Single Point of Failure in WebSocket Connections: Issue: If a single API server fails, all WebSocket connections to that server are lost.
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Mistral Devstral Small 1.1645 words
Potential Failure Modes, Race Conditions, and Scaling Bottlenecks WebSocket Connection Failures: Failure Mode: WebSocket connections can drop due to network issues or server crashes. Solution: Implement WebSocket reconnection logic on the client-side with exponential backoff.
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Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Mistral Devstral Medium346 words
Weak Claim 1: "Works with any language, any device." Why it's weak: This claim is overly broad and may not be entirely accurate. Different languages have unique structures, and it's unlikely that a single model can achieve high accuracy across all languages without significant training data for each.
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Mistral Devstral Small 1.1315 words
Weak Claim: "Our proprietary EEG headband uses advanced ML to decode neural patterns into text with 94% accuracy." Why it's weak: This claim is too vague and lacks concrete evidence.
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Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Mistral Devstral Medium442 words
1-Month Health and Longevity Plan Key Areas: Diet, Exercise, Sleep Week 1: Establish a Baseline Diet: Track your current diet using a journal or app (e.g., MyFitnessPal) to understand your eating habits. Start incorporating more fruits and vegetables into your meals. Begin reducing processed foods and sugary drinks.
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Mistral Devstral Small 1.1514 words
1-Month Health and Longevity Plan Week 1: Foundation Building Diet: Start with Small Changes Begin by adding more fruits and vegetables to your meals. Replace sugary drinks with water or herbal tea. Aim for a balanced diet with lean proteins, whole grains, and healthy fats.
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Our Verdict
Mistral Devstral Small 1.1
Mistral Devstral Small 1.1Winner
Mistral Devstral Medium
Mistral Devstral MediumRunner-up

Pick Mistral Devstral Small 1.1. In 46 blind votes, Mistral Devstral Small 1.1 wins 61% of the time. That's not luck.

Pick Mistral Devstral Medium for Reasoning. Pick Mistral Devstral Small 1.1 for Web Design. Mistral Devstral Small 1.1 costs 6.7x less per token.

Clear winner

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Mistral Devstral Medium
Input
$0.40
Output
$2.00
Mistral Devstral Small 1.1
Input
$0.10
4.0× cheaper
Output
$0.30
6.7× cheaper

Mistral Devstral Small 1.1 is cheaper on both: 4.0× input, 6.7× output.

Writing DNA

Style Comparison

Similarity
97%

Mistral Devstral Medium uses 2.6x more headings

Mistral Devstral Medium
Mistral Devstral Small 1.1
50%Vocabulary51%
18wSentence Length18w
0.50Hedging0.55
4.1Bold3.8
4.8Lists5.1
0.00Emoji0.00
0.19Headings0.07
0.29Transitions0.28
Based on 27 + 27 text responses
Research

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FAQ

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Model pages

Mistral Devstral Medium logo
Mistral Devstral Medium59 outputs, specs and price
Mistral Devstral Small 1.1 logo
Mistral Devstral Small 1.159 outputs, specs and price
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