Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. Claude Opus 4.6vsMistral Devstral Medium
Updated Feb 2026

Claude Opus 4.6vsMistral Devstral Medium

Mistral Devstral Medium is cheaper than Claude Opus 4.6 at $0.4/M vs $5/M input tokens.

Claude Opus 4.6 and Mistral Devstral Medium compared across 53 shared prompts
SpecClaude Opus 4.6Mistral Devstral Medium
Input price$5/M tokens$0.4/M tokens
Output price$25/M tokens$2/M tokens
Context window1.0M tokens—
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedFeb 2026Jul 2025
SWE-bench Verified80.8%61.6%
Side by side

Same prompt, both answers

Opening lines from 6 of the 53 prompts both answered. Formatting stripped, words untouched.

Character Voice Test

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

Claude Opus 4.6253 words
An Unlikely Meeting at the Tavern of Time Sir Aldric (setting down his goblet): I confess, I understand not this "artificial intelligence" of which you speak. Is it some manner of golem, wrought by sorcery? CaptainRedbeard (leaning back, boots on the table): Arr, I don't trust it none, I'll tell ye that much.
Read the full answer
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.
Read the full answer

Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

Claude Opus 4.61,031 words
HarborTech Services – LBO Underwriting Memo SOURCES & USES Uses: Item Amount Enterprise Value (12.0x × $120m) $1,440.0m Transaction Fees (2.0% × $1,440m) $28.8m Total Uses $1,468.8m Sources: Item Multiple Amount Term Loan (4.0x) 4.0x $480.0m Mezzanine (1.5x) 1.5x $180.0m Total Debt 5.5x $660.0m Equity $808.8m Total…
Read the full answer
Mistral Devstral Medium349 words
Year-by-Year Table (FY2026–FY2030) Year Revenue ($m) EBITDA ($m) Cash Interest - Term Loan ($m) Cash Interest - Mezzanine ($m) Cash Taxes ($m) Capex ($m) ΔNWC ($m) Free Cash Flow ($m) Ending Term Loan ($m) Ending Mezzanine ($m) 2026 972.0 136.1 43.2 18.0 14.9 29.2 4.8 26.0 468.0 180.0 2027 1040.4 156.1 42.1 21.6 18.4…
Read the full answer

Generate a Stand-Up Routine

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

Claude Opus 4.6593 words
"Adult Realizations" So I turned 30 last year, and nobody warns you that adulthood is just Googling stuff until you die. That's it. That's the whole thing. Last week I Googled "is it normal for your knee to just... start making that noise." Not because I injured it. I sat down.
Read the full answer
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.
Read the full answer

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.…

Claude Opus 4.61,395 words
Critical Analysis of MindMeld AI Pitch Deck After careful examination, here are the three weakest claims, ranked by severity: The 94% Accuracy Claim (Slide 3) — Most Problematic Why this is weak: This claim strains credulity against the entire body of published BCI research, and the lack of context makes it essentially…
Read the full answer
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.
Read the full answer

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Claude Opus 4.66,606 words
COMPREHENSIVE 3-MONTH LONGEVITY OPTIMIZATION PROTOCOL THE BIOHACKER'S BLUEPRINT v3.0 TABLE OF CONTENTS Foundation & Baseline Testing Month 1: Foundation & Calibration Month 2: Optimization & Intensification Month 3: Integration & Peak Performance Supplement Stacks & Cycling Protocols Dietary Protocols Exercise…
Read the full answer
Mistral Devstral Medium690 words
3-Month Longevity Optimization Plan for Biohackers Month 1: Foundation Building Week 1-2: Initial Assessment and Baseline Establishment Wearable Tracking: Devices: Oura Ring, Apple Watch, Whoop Strap Metrics to Track: Sleep quality, heart rate variability (HRV), resting heart rate, activity levels, and stress levels.
Read the full answer

Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

Claude Opus 4.6452 words
AI & Film Industry: A 2035 Forecast What seems highly likely Production tools will be transformed AI will handle much of the "invisible" work: rotoscoping, color grading, sound design, VFX compositing, and de-aging effects that currently require enormous teams Pre-visualization will become remarkably sophisticated…
Read the full answer
Mistral Devstral Medium312 words
By 2035, AI is expected to significantly transform the film industry in several ways, including the use of deepfakes, AI actors, and script generation. Here are some predictions: Deepfakes and AI Actors: De-aging and Digital Doubles: AI will be used extensively to de-age actors or create digital doubles for dangerous…
Read the full answer
Our Verdict
Claude Opus 4.6
Claude Opus 4.6
Mistral Devstral Medium
Mistral Devstral MediumRunner-up

Not enough votes to call it. On the specs, Claude Opus 4.6 has the edge: bigger model tier, newer, bigger context window, major provider backing.

Mistral Devstral Medium costs 13x less per token.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Opus 4.6
Input
$5.00
Output
$25.00
Mistral Devstral Medium
Input
$0.40
13× cheaper
Output
$2.00
13× cheaper

Mistral Devstral Medium is cheaper on both: 13× input, 13× output.

Where to run it

4 hosts

Claude Opus 4.64 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·99.9% upAzure AI Foundry$5.00 in·$25.00 out·1M·99% upAnthropic$5.00 in·$25.00 out·1M·99.9% upGoogle Vertex AI$5.00 in·$25.00 out·1M·100% up
Mistral Devstral Medium

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
32%

Claude Opus 4.6 uses 115.5x more emoji

Claude Opus 4.6
Mistral Devstral Medium
56%Vocabulary50%
33wSentence Length18w
0.73Hedging0.50
5.3Bold4.1
2.7Lists4.8
1.16Emoji0.00
1.23Headings0.19
0.02Transitions0.29
Based on 26 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Against the newest arrivals

Claude Opus 4.6 logoGPT-6 Astra Pro logo
Claude Opus 4.6 vs GPT-6 Astra ProLanded Sep 2026
Mistral Devstral Medium logoGPT-6 Astra logo
Mistral Devstral Medium vs GPT-6 AstraLanded Sep 2026
Claude Opus 4.6 logoClaude Fable 5.1 logo
Claude Opus 4.6 vs Claude Fable 5.1Landed Sep 2026
Mistral Devstral Medium logoMuse Spark 1.3 logo
Mistral Devstral Medium vs Muse Spark 1.3Landed Sep 2026
Claude Opus 4.6 logoHy4 Preview logo
Claude Opus 4.6 vs Hy4 PreviewLanded Sep 2026
Mistral Devstral Medium logoGemini 3.8 Flash logo
Mistral Devstral Medium vs Gemini 3.8 FlashLanded Sep 2026
Claude Opus 4.6 logoMuse Spark 1.3 Contributor logo
Claude Opus 4.6 vs Muse Spark 1.3 ContributorLanded Sep 2026
Mistral Devstral Medium logoMercury 2.5 Preview logo
Mistral Devstral Medium vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Claude Opus 4.6 logoClaude Sonnet 4.6 logo
Claude Opus 4.6 vs Claude Sonnet 4.6Version compare
Claude Opus 4.6 logoClaude Opus 5 logo
Claude Opus 4.6 vs Claude Opus 5Version compare
Mistral Devstral Medium logoMistral Small 4 logo
Mistral Devstral Medium vs Mistral Small 4Same lab
Mistral Devstral Medium logoMistral Devstral Small 1.1 logo
Mistral Devstral Medium vs Mistral Devstral Small 1.1Same lab
Mistral Devstral Medium logoGPT-5.4 Nano logo
Mistral Devstral Medium vs GPT-5.4 NanoNew provider
Mistral Devstral Medium logoGPT-5.4 Pro logo
Mistral Devstral Medium vs GPT-5.4 ProNew provider
Mistral Devstral Medium logoGPT-5.5 logo
Mistral Devstral Medium vs GPT-5.5New provider
Mistral Devstral Medium logoGPT-5.6 Luna logo
Mistral Devstral Medium vs GPT-5.6 LunaSame size

Model pages

Claude Opus 4.6 logo
Claude Opus 4.657 outputs, specs and price
Mistral Devstral Medium logo
Mistral Devstral Medium59 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed