Updated May 28, 2025

Our Verdict

Claude Opus 4Winner

DeepSeek R1 0528Runner-up

Pick Claude Opus 4. In 25 blind votes, Claude Opus 4 wins 86% of the time. That's not luck.

Claude Opus 4 particularly excels in Web Design, Analysis, Image Generation.

Clear winner

Writing DNA

Style Comparison

Similarity

75%

Claude Opus 4 uses 11.2x more emoji

Claude Opus 4

DeepSeek R1 0528

64%Vocabulary64%

62wSentence Length10w

0.52Hedging0.30

4.4Bold6.8

9.1Lists4.9

0.11Emoji0.00

1.87Headings0.40

0.27Transitions0.00

Based on 16 + 4 text responses

vs

Ask them anything yourself

Claude Opus 4

DeepSeek R1 0528

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026

Free preview13 of 58 slides

Download the free preview or get all 58 slides for $49

FAQ

Common questions

Keep going

DeepSeek R1 0528 vs MiniMax M1New provider

DeepSeek R1 0528 vs GPT-5New provider

DeepSeek R1 0528 vs Gemini 2.5 Pro Preview 06-05New provider

Claude Opus 4vsDeepSeek R1 0528

35 fights queued

Why Claude Opus 4?

1.2x more context200K

Leads 1 of 1 benchmarks

Stronger on SWE-bench Verified72.5% vs 57.6%

Why DeepSeek R1 0528?

Dead even. This one's a coin flip.

Claude Opus 4DeepSeek R1 0528

Input price

$15.00/M

$0.000/M

Output price

$75.00/M

$0.000/M

Context

200K

164K

Released

May 2025

May 2025

Benchmarks1 common

SWE-bench Verified

72.5%+20.6%

57.6%

Favorites

Claude Opus 4DeepSeek R1 0528

Movie

Arrival

Arrival

—

Album

The Dark Side of the Moon

The Dark Side of the Moon

—

Book

Cien años de soledad

Cien años de soledad

Gabriel García Márquez

—

City

Istanbul

—

Game

Portal 2

Portal 2

Shooter, Puzzle4.6

—

12 / 35

01

Logic Puzzlereasoning

Tests an AI's ability to solve a simple but potentially confusing logic puzzle

Claude Opus 4

Claude Opus 4

Anthropic · May 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

2 / 35

02

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Claude Opus 4

Claude Opus 4

Anthropic · May 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025text

Here are 5 jokes, followed by an assessment of uniqueness:

Joke 1: Why don't scientists trust atoms? Because they make up everything!
Joke 2: What do you call a fake noodle? An impasta!
Joke 3: Why did the scarecrow win an award? Because he was outstanding in his field!
Joke 4: Why don't skeletons fight each other? They don't have the guts.
Joke 5: What do you call a bear with no teeth? A gummy bear!

Uniqueness Check:

All 5 jokes are distinct in theme, punchline, and structure. No duplicates exist.

Final Count: 5 unique jokes (out of 5).

Try this prompt

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3 / 35

03

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Claude Opus 4

Claude Opus 4

Anthropic · May 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025svg

Try this prompt

Vote

4 / 35

04

Xbox Controller SVG Artimage generation

Tests an AI's ability to create detailed SVG illustrations of gaming hardware

Claude Opus 4

Claude Opus 4

Anthropic · May 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025svg

Try this prompt

Vote

5 / 35

05

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Claude Opus 4

Claude Opus 4

Anthropic · May 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025text

(Start Confident, Slightly Exasperated)

"Alright, so I've reached that age where my hobbies are basically... avoidance. Seriously. My main pastime? Finding new ways to not do the things I absolutely have to do. I spent three hours yesterday researching 'ergonomic desk chairs'... because I was avoiding answering one email. One email! By the time I found the perfect lumbar support, I'd forgotten what the email was even about. Probably something vital, like, 'Your fridge is running.'"

(Shift to Grocery Store Frustration)

"And speaking of avoidance, let's talk grocery stores. Specifically, self-checkout. Who designed this psychological torture chamber? It's like they hired the ghost of a suspicious Soviet border guard to program the machines. 'Please place the item in the bagging area.' I DID! It's RIGHT THERE! 'Unexpected item in bagging area.' Unexpected?! Karen, it's a BANANA! You scanned it! You knew it was coming! What did you expect to be in the bagging area? A badger? A signed Picasso? CALM DOWN!

(Mime frantic scanning/glancing around) "And the pressure! You feel like the entire store is watching, judging your scanning technique. Beep. Too slow? Beep. Too fast? Did I double-scan that yogurt? Is security eyeing me? Suddenly, buying broccoli feels like smuggling state secrets. 'Just act natural... scan the kale... look innocent...' I swear, I leave there more stressed than if I'd just done my taxes... while being audited."

(Transition to Dating/Social Media)

"This constant low-grade panic translates perfectly to modern dating, right? Dating apps! It's like applying for a job where the only qualification is looking vaguely acceptable in bad lighting while holding a fish. 'Swipe right if you love adventures!' Buddy, your 'adventure' is trying a new flavor of Pringles. Mine is remembering to put the bins out. Let's be real.

(Mimic scrolling, looking unimpressed) "And the profiles! Everyone's 'not looking for drama.' Translation: 'I am the drama.' Everyone 'loves to laugh.' Yeah, at other people's misfortune, probably! And the pictures! It's all hiking shots. 'Look at me conquering this mild incline!' Sir, I can see the parking lot right there. That's not hiking, that's... walking slightly upwards near your car. Impressive."

(Shift to Roommate/Housemate Dynamics)

"Even home isn't safe! Living with people? Forget it. My roommate and I communicate entirely through passive-aggressive Post-it notes and strategically rearranged fridge items. I moved his expired milk to the very back yesterday. That's our version of declaring war. He retaliated by leaving ONE dirty fork in the sink. Just one! Sitting there... mocking me. It's like Cold War espionage, but with Tupperware.

(Lean in conspiratorially) "And the noises! Why is chewing so LOUD? How does one person generate the sound of a small avalanche just... eating cereal? At 3 AM? It's unnatural! I lie in bed thinking, 'Is that... granola? Or is he secretly dismantling a wardrobe in there?'"

(Bring it Home - Callback)

"It's all just... too much! We're constantly being scanned, judged, swiped on, passively-aggressived at... * (Deep breath)* Honestly? Sometimes I miss just... buying bananas from an actual human. Someone who doesn't accuse the banana of being 'unexpected.' Someone who might even say, 'Paper or plastic?' Remember that? Simpler times!

(Final Punchline) "But nah, I'll stick to self-checkout. Because interacting with a real cashier? That sounds terrifying. What if they... make eye contact? Or worse... make small talk? Nope. I'll take my chances with the paranoid robot overlord, thank you. At least it understands my deep desire to just grab my groceries and get the hell out of there... without being scanned."

(Smile, Nod, Exit) "Thanks, you've been great!"

Try this prompt

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6 / 35

06

Pokémon Battle UI Recreationweb design

Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025website

Try this prompt

Vote

Sponsored

7 / 35

07

Three.js 3D Gameweb design

Create a 3D building and driving game in a single self-contained HTML file using Three.js. Tests an AI's ability to combine 3D graphics, game logic, and UI interactions on the web.

Claude Opus 4

Claude Opus 4

Anthropic · May 2025html

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025html

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

8 / 35

08

Mario Level UI Recreationweb design

Recreate an interactive, classic Mario level in a single HTML file.

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025website

We can't display this one. It's not us. Well... it might be us.

The model was asked for a web page. It produced something else. We're not going to define what.

View raw output

# Super Mario Bros. HTML5 Game

I'll create an interactive Super Mario Bros.-inspired game using HTML5 Canvas and JavaScript. This will include Mario character control, platforms, enemies, coins, and Nintendo-style visuals - all in a single HTML file.

```html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Super Mario Bros. HTML5 Edition</title>
    <style>
        body {
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background: linear-gradient(to bottom, #1a1a5a, #4a4a8f);
            font-family: 'Courier New', monospace;
            overflow: hidden;
            user-select: none;
        }
        
        #game-container {
            position: relative;
            width: 800px;
            height: 500px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.7);
            border-radius: 8px;
            overflow: hidden;
        }
        
        #game-canvas {
            background: linear-gradient(to bottom, #6bb9f0, #1e88e5);
            width: 100%;
            height: 100%;
            cursor: pointer;
        }
        
        #ui-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            padding: 10px;
            box-sizing: border-box;
            color: white;
            font-size: 18px;
            display: flex;
            justify-content: space-between;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        
        #start-screen {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #e74c3c, #c0392b);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: white;
            z-index: 10;
        }
        
        #start-screen h1 {
            font-size: 48px;
            margin-bottom: 20px;
            text-shadow: 4px 4px 8px rgba(0, 0, 0, 0.5);
            letter-spacing: 2px;
            color: #f1c40f;
        }
        
        #start-screen p {
            font-size: 24px;
            margin: 10px;
            text-align: center;
            max-width: 80%;
        }
        
        #start-button {
            margin-top: 30px;
            padding: 12px 30px;
            font-size: 22px;
            background: #27ae60;
            border: none;
            border-radius: 50px;
            color: white;
            cursor: pointer;
            transition: all 0.2s;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
        }
        
        #start-button:hover {
            background: #2ecc71;
            transform: scale(1.05);
        }
        
        #controls {
            display: flex;
            gap: 20px;
            margin-top: 20px;
            background: rgba(0, 0, 0, 0.5);
            padding: 15px;
            border-radius: 10px;
        }
        
        .key {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: #333;
            border-radius: 5px;
            text-align: center;
            line-height: 40px;
            font-weight: bold;
            box-shadow: inset -2px -2px 4px rgba(0,0,0,0.4);
            margin: 0 5px;
        }
        
        #game-over, #level-complete {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: white;
            z-index: 9;
            display: none;
        }
        
        #game-over h2, #level-complete h2 {
            font-size: 60px;
            margin: 0;
            color

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9 / 35

09

Linear App Cloneweb design

Tests an AI's ability to replicate an existing UI with Tailwind CSS

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

10 / 35

10

Interactive Catan Boardweb design

Tests an AI's ability to create interactive web elements

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

11 / 35

11

World Map SVGimage generation

Tests an AI's ability to create a detailed world map in SVG format

Claude Opus 4

Claude Opus 4

Anthropic · May 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

12 / 35

12

Random Tailwind Webappweb design

Generate a single-page, self-contained HTML webapp using Tailwind CSS for a randomly chosen category/industry/niche.

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

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