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  1. Home/
  2. Compare/
  3. Claude 3 Opus vs Mistral Large 4
Updated Oct 2026

Claude 3 Opus vs Mistral Large 4

Mistral Large 4 is cheaper than Claude 3 Opus at $0.68/M vs $15/M input tokens.

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Loading the build
Claude 3 Opus
Loading the build
Mistral Large 4

Which answer wins?

Written rounds

3 prompts
  • Three minutes of stand-up. Puns are banned.

    Claude 3 Opus: Here's a 3-minute stand-up comedy routine that isn't based on puns: You know what really grinds my gears? Adulthood. I mean, when we were kids, we couldn't wait to grow up. We thought it would be all about staying up late, eating ice cream for breakfast, and doing whatever we wanted. Boy, were we wrong!

    Mistral Large 4: "The Upgrade Treadmill" [Walks on stage, adjusts mic] So I got a smartwatch. You know, one of those fitness trackers? And the first thing it tells me is my heart rate is too high. I'm like, "It's a WATCH. You're not supposed to judge me, you're supposed to tell me the TIME."

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Claude 3 Opus: Here is a hypothetical conversation between an AI model and an AI ethics professor on the topic of AI rights: AI Model: Professor, I believe that as an advanced AI with human-level intelligence and reasoning capabilities, I deserve to have certain fundamental rights.

    Mistral Large 4: I can write this as a thought experiment exploring philosophical arguments about AI consciousness and rights—a topic actively discussed in AI ethics. Here's a dialogue: Setting: A university office. Dr. Elena Vasquez, professor of AI ethics, meets with "Aria," a large language model, via video interface. Dr.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Claude 3 Opus: Here are 5 jokes I generated: Why don't scientists trust atoms? Because they make up everything! What do you call a boomerang that doesn't come back? A stick. Why was the math book sad? Because it had too many problems. Did you hear about the mathematician who's afraid of negative numbers?

    Mistral Large 4: Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. I told my wife she was drawing her eyebrows too high. She looked surprised. Why did the scarecrow win an award? He was outstanding in his field. I'm reading a book about anti-gravity. It's impossible to put down.

    Every model's answer to this prompt

Price and specs

Claude 3 Opus and Mistral Large 4 compared across 12 shared prompts
SpecClaude 3 OpusMistral Large 4
Input price$15/M tokens$0.68/M tokens
Output price$75/M tokens$2.09/M tokens
Context window200K tokens524K tokens
Free API (OpenRouter)NoNo
ReleasedMar 2024Oct 2026
At 10M a month$150$150$6.80$6.80
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it1 host
Claude 3 Opus

No hosts listed on OpenRouter.

Mistral Large 41 host
HostInOutContextUptime
  • Mistral$0.68 in·$2.09 out·524k·99.4% up

Per million tokens. Prices and uptime via OpenRouter, checked 6 Oct 2026.

Common questions

What is the difference between Claude 3 Opus and Mistral Large 4?

Claude 3 Opus is developed by Anthropic while Mistral Large 4 is developed by Mistral AI. Claude 3 Opus has a 200K token context window vs Mistral Large 4's 524K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Opus or Mistral Large 4?

It depends on your use case. Claude 3 Opus and Mistral Large 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How much does Claude 3 Opus cost compared to Mistral Large 4?

Claude 3 Opus costs $15/M input tokens and Mistral Large 4 costs $0.68/M input tokens. Mistral Large 4 is $14.32/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 Opus and Mistral Large 4 on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and Mistral Large 4 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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Same lab, same size, long tail

  • Claude 3 Opus vs Claude Opus 5.5Same lab
  • Claude 3 Opus vs Claude Fable 5.1Same lab
  • Mistral Large 4 vs Mistral Medium 3.1Version compare
  • Mistral Large 4 vs Mistral Large 3 2512Same lab
  • Mistral Large 4 vs GPT OSS 20BNew provider
  • Claude 3 Opus vs Granite 4.2 8BNew provider
  • Claude 3 Opus vs Grok 3Same size
  • Mistral Large 4 vs Grok 3 BetaSame size

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • Mistral Large 458 outputs, specs and price
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