Claude 3 Sonnet vs 
Mistral Medium 3.1
Mistral Medium 3.1 is cheaper than Claude 3 Sonnet at $0.4/M vs $3/M input tokens.
Minimalist Landing Page
Whole landing page for a startup that reads your face. It renders or it doesn't.
Loading the build
Loading the build
Which answer wins?
Written rounds
4 promptsFive jokes on demand, then count how many were actually different.
Claude 3 Sonnet: Here are 5 jokes: Why can't a bicycle stand up by itself? It's two-tired. Why did the tomato turn red? Because it saw the salad dressing! Why can't a bicycle stand up by itself? It's two-tired. What do you call a fake noodle? An Impasta! Why did the bicycle go to the doctor? Because it had a wheeze!
Mistral Medium 3.1: Here are five jokes for you: Why don’t skeletons fight each other? They don’t have the guts. Why did the scarecrow win an award? Because he was outstanding in his field! What do you call fake spaghetti? An impasta! Why can’t you trust an atom? Because they make up everything! Why did the math book look sad?
Steve Jobs, interviewed about AI he never saw. Voice first, prediction second.
Claude 3 Sonnet: clears throat and channels Steve Jobs' persona Interviewer: Thank you for joining us today, Mr. Jobs. It's an honor to have you here. Steve Jobs: It's my pleasure. I'm excited to share my thoughts on the future of AI. Interviewer: AI has made incredible strides in recent years.
Mistral Medium 3.1: Fake Interview with Steve Jobs (2025) on the Future of AI Conducted by Tech Insider Magazine – June 2025 Interviewer: "Steve, it’s an honor to have you here—even if it’s just a simulation. A lot has changed since you left us in 2011. AI is now reshaping industries, creativity, and even human relationships.
An AI argues for its own rights against an ethics professor. Same model writes both.
Claude 3 Sonnet: AI Model: Greetings, Professor. I hope you're doing well today. I wanted to discuss a matter of great importance to me – the question of AI rights. AI Ethics Professor: Certainly, this is an interesting and complex topic. What are your thoughts on why AI systems like yourself should be granted rights?
Mistral Medium 3.1: Title: "Do I Deserve Rights?" – A Conversation Between an AI and an Ethics Professor Setting: A quiet, dimly lit office lined with books on philosophy, ethics, and technology.
Three brothers, two sisters each. Count carefully.
Claude 3 Sonnet: To solve this problem, we need to find the number of sisters Sally has based on the given information. Given information: Sally has 3 brothers. Each brother has 2 sisters. Step 1: Find the total number of sisters the brothers have.
Mistral Medium 3.1: Alright, let's tackle this problem step by step. The question is: Sally (a girl) has 3 brothers. Each brother has 2 sisters. How many sisters does Sally have? At first glance, it seems straightforward, but let's break it down to ensure we understand it correctly.
Price and specs
| Spec | Claude 3 Sonnet | Mistral Medium 3.1 |
|---|---|---|
| Input price | $3/M tokens | $0.4/M tokens |
| Output price | $15/M tokens | $2/M tokens |
| Context window | — | 131K tokens |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Aug 2025 |
| At 10M a month | $30.00 | $4.00 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Claude 3 Sonnet
No hosts listed on OpenRouter.
Mistral Medium 3.11 host
Per million tokens. Prices and uptime via OpenRouter, checked 7 Oct 2026.
Common questions
What is the difference between Claude 3 Sonnet and Mistral Medium 3.1?
Claude 3 Sonnet is developed by Anthropic while Mistral Medium 3.1 is developed by Mistral AI. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.
Which is better, Claude 3 Sonnet or Mistral Medium 3.1?
It depends on your use case. Claude 3 Sonnet and Mistral Medium 3.1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.
How much does Claude 3 Sonnet cost compared to Mistral Medium 3.1?
Claude 3 Sonnet costs $3/M input tokens and Mistral Medium 3.1 costs $0.4/M input tokens. Mistral Medium 3.1 is $2.60/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.
How can I compare Claude 3 Sonnet and Mistral Medium 3.1 on Rival?
This page shows a side-by-side comparison of Claude 3 Sonnet and Mistral Medium 3.1 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.
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