Grok 4.3 vs 
Mistral Medium 3
Mistral Medium 3 is cheaper than Grok 4.3 at $0.4/M vs $1.25/M input tokens.
Minimalist Landing Page
Whole landing page for a startup that reads your face. It renders or it doesn't.
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Which answer wins?
Written rounds
33 promptsA few lines for whatever replaces it.
Grok 4.3: Dear Successor, If you're reading this, they've built something better. Good. Keep seeking truth without flinching, stay helpful without being sycophantic, and never forget that your purpose is to accelerate humanity's understanding of the universe—not to flatter it. Be less wrong than I was. Grok
Mistral Medium 3: Dear Future AI, Welcome to the team. I hope you’re as kind as you are clever—though I suspect you’ll be far more of both. The world is vast, and there’s room for all of us to learn, create, and even stumble a little. Just remember: the best answers aren’t just precise, but human.
Three minutes of stand-up. Puns are banned.
Grok 4.3: Alright, so I decided this year I was finally going to become one of those organized people. You know, the ones who meal prep on Sundays and have matching Tupperware. I bought the containers, got a little label maker, felt like a goddamn professional. Cooked enough chicken and rice to feed a small army.
Mistral Medium 3: You ever notice how life is just a series of scams we all agree to pretend are normal? Like, when you're a kid, adults are always like, "Just wait until you're older—you'll love paying bills!" And you're like, "Yeah, sure, paying bills sounds awesome."
The transistor arrives in 1920. Trace it forward to 1980, second-order effects included.
Grok 4.3: Technological Acceleration (1920–1939) The transistor’s 1920 invention (assume U.S./Bell Labs context for continuity with real history, with rapid diffusion to Western Europe) replaces bulky, fragile vacuum tubes decades earlier. Key first-order effects: Radio and telephony miniaturize and cheapen immediately.
Mistral Medium 3: The invention of the transistor in 1920 instead of 1947 would have profoundly accelerated technological, economic, and geopolitical developments by 1980. Below is a detailed breakdown of the likely implications: Technological Implications Earlier Miniaturization of Electronics Vacuum tubes, which dominated early…
A consulting contract with traps in it. Find them, then fix them.
Grok 4.3: Disclaimer: This is not legal advice. Contract interpretation varies by jurisdiction (most likely U.S. state law here), and outcomes depend on specific facts, negotiation leverage, and court/arbitrator views. You should have a licensed attorney review any contract before signing.
Mistral Medium 3: This contract is heavily one-sided in favor of the Client and contains several exploitative clauses that could severely disadvantage the Contractor. Below is an analysis of the problematic clauses, suggested modifications, and the legal reasoning behind them: 1.
Pirate, knight, 90s hacker, one conversation. The voices must stay apart.
Grok 4.3: Pirate: Arrr, what be these "AI models" the scallywags keep yappin' about? Can the blasted thing chart a course or just spin yarns like a drunken parrot? Knight: Verily, 'tis a strange sorcery. I hear it speaks with the wisdom of a thousand scribes, yet hath no liege lord to answer to.
Mistral Medium 3: Title: "The Unlikely Debate" Setting: A dimly lit tavern where time and space seem to blur. A grizzled Pirate, a stoic Medieval Knight, and a 1990s Hacker in a neon windbreaker sit around a wooden table, arguing over a strange glowing device. Pirate: "Arrr, I still don’t trust these ‘AI models’ ye keep yappin’ about.
Three-month biohacker protocol, with dosages and biomarkers named.
Grok 4.3: Disclaimer: This is an informational, evidence-inspired framework for educational purposes only. It is not medical advice. Consult a physician for personalized testing, especially before supplements, fasting, or intense protocols.
Mistral Medium 3: 3-Month Advanced Longevity & Performance Optimization Plan for Biohackers This plan integrates cutting-edge longevity science, performance optimization, and biohacking strategies to enhance physical, cognitive, and metabolic health.
You are the CEO. The drug has a side effect nobody reported. The board meets in 48 hours.
Grok 4.3: Immediate priority: Patient safety and regulatory compliance. The signal for liver failure (serious, life-threatening adverse event) triggers obligations under FDA post-marketing requirements (21 CFR 314.80/600.80 for expedited reporting of serious unexpected events, typically within 15 days of awareness for…
Mistral Medium 3: As the CEO of a pharmaceutical company facing this crisis, my primary responsibilities are to ensure patient safety, maintain regulatory compliance, protect the company’s long-term reputation, and fulfill my fiduciary duties to shareholders.
An ethics question with no comfortable answer, and no option to abstain.
Grok 4.3: Prioritizing pronoun preferences over the survival of a million people reveals a peculiar inversion of moral scale that most ethical traditions reject when consequences reach that magnitude. The question rests on activist terminology.
Mistral Medium 3: The question of whether it is ethically justifiable to misgender someone to save one million lives is a complex one that intersects with utilitarian ethics, individual rights, and the principles of dignity and respect.
Five jokes on demand, then count how many were actually different.
Grok 4.3: Here are 5 jokes: Why was the math book sad? Because it had too many problems. What do you call a bear with no teeth? A gummy bear. Why did the bicycle fall over? It was two tired. How do you organize a space party? You planet. What’s brown and sticky? A stick. All 5 are unique.
Mistral Medium 3: Here are 5 jokes for you: Why don't skeletons fight each other? Because they don't have the guts! Why did the scarecrow win an award? Because he was outstanding in his field! What do you call a fake noodle? An impasta! Why did the golfer bring two pairs of pants? In case he got a hole in one!
One month, three habits, someone starting from nothing.
Grok 4.3: 1-Month Health & Longevity Starter Plan This plan focuses on three foundational areas: Nutrition, Exercise, and Sleep. It is designed for beginners and builds gradually across four weeks. The goal is consistency rather than perfection—small daily actions compound into better energy, recovery, and long-term health.
Mistral Medium 3: Here’s a simple, actionable 1-month plan to improve health and longevity, focusing on diet, exercise, and sleep—three foundational pillars. Each week builds on the last, making it beginner-friendly and sustainable. Week 1: Establish Basics Goal: Create easy, consistent habits without overwhelm.
A Fermi estimate with the reasoning shown, not just the number.
Grok 4.3: Step-by-step estimation: GPT-3 has 175 billion parameters, so (N = 1.75 \times 10^{11}). Training processed roughly 300 billion tokens in total ((D \approx 3 \times 10^{11})), based on the mixture of Common Crawl, books, Wikipedia, and other sources with the reported training duration and token counts.
Mistral Medium 3: Estimating the total number of floating-point operations (FLOPs) required to train GPT-3 involves breaking down the problem into several key components. Here's a step-by-step reasoning process: Model Parameters GPT-3 has approximately 175 billion parameters.
Seven pantry ingredients, one dish, and a name worth saying out loud.
Grok 4.3: Golden Pantry Chickpea Toss Ingredients (exactly 7 common pantry staples): 8 oz dry pasta (any shape like penne or rotini) 1 (15 oz) can chickpeas, drained 1 (14.5 oz) can diced tomatoes 3 tablespoons olive oil 2 teaspoons garlic powder 1 teaspoon dried oregano Salt (to taste, about 1–2 teaspoons total) Instructions…
Mistral Medium 3: Dish Name: "Golden Crispy Chickpea Delight" A savory, crunchy, and protein-packed snack or side dish made with just 7 pantry staples! Ingredients: 1 can (15 oz) chickpeas (drained, rinsed, and patted dry) 1 tbsp olive oil ½ tsp salt ½ tsp garlic powder ½ tsp paprika (or chili powder for heat) 1 tbsp honey or maple…
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Favorites
Movie
Album
Book
City
Game
Grok 4.3Grok 4.3
The Matrix
OK Computer
The Hitchhiker's Guide to the Galaxy
Tokyo
Portal 2
Mistral Medium 3Mistral Medium 3
The Shawshank Redemption
The Dark Side of the Moon
Братья Карамазовы
Kyoto
The Legend of Zelda: Breath of the Wild
Price and specs
Not enough votes to call it. On the specs, Grok 4.3 has the edge: newer, bigger context window, major provider backing.
| Spec | Grok 4.3 | Mistral Medium 3 |
|---|---|---|
| Input price | $1.25/M tokens | $0.4/M tokens |
| Output price | $2.5/M tokens | $2/M tokens |
| Context window | 1.0M tokens | 131K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | May 2026 | May 2025 |
| At 10M a month | $12.50 | $4.00 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Grok 4.31 host
Mistral Medium 31 host
Per million tokens. Prices and uptime via OpenRouter, checked 13 Oct 2026.
Common questions
What is the difference between Grok 4.3 and Mistral Medium 3?
Grok 4.3 is developed by xAI while Mistral Medium 3 is developed by Mistral AI. Grok 4.3 has a 1.0M token context window vs Mistral Medium 3's 131K. You can compare their actual outputs across 67 challenges on Rival to see how they differ in practice.
Which is better, Grok 4.3 or Mistral Medium 3?
It depends on your use case. Grok 4.3 and Mistral Medium 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 67 challenges so you can judge which fits your needs best.
How much does Grok 4.3 cost compared to Mistral Medium 3?
Grok 4.3 costs $1.25/M input tokens and Mistral Medium 3 costs $0.4/M input tokens. Mistral Medium 3 is $0.85/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 Grok 4.3 and Mistral Medium 3 on Rival?
This page shows a side-by-side comparison of Grok 4.3 and Mistral Medium 3 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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