Updated May 28, 2025

Our Verdict

ChatGPT-4o (March 2025)Winner

DeepSeek R1 0528Runner-up

Pick ChatGPT-4o (March 2025). In 1 blind votes, ChatGPT-4o (March 2025) wins 100% of the time. That's not luck.

Clear winner

Writing DNA

Style Comparison

Similarity

75%

ChatGPT-4o (March 2025) uses 94.5x more emoji

ChatGPT-4o (March 2025)

DeepSeek R1 0528

55%Vocabulary64%

24wSentence Length10w

0.52Hedging0.30

3.3Bold6.8

6.0Lists4.9

0.94Emoji0.00

0.63Headings0.40

0.05Transitions0.00

Based on 15 + 4 text responses

vs

Ask them anything yourself

ChatGPT-4o (March 2025)

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 Llama 4 MaverickNew provider

ChatGPT-4o (March 2025) vs Grok 3New provider

ChatGPT-4o (March 2025) vs Gemini 2.5 Pro (I/O Edition)New provider

ChatGPT-4o (March 2025)vsDeepSeek R1 0528

27 fights queued

Why ChatGPT-4o (March 2025)?

Dead even. This one's a coin flip.

Why DeepSeek R1 0528?

1.3x more context164K

2 months newerMay 2025

ChatGPT-4o (March 2025)DeepSeek R1 0528

Input price

$5.00/M

$0.000/M

Output price

$15.00/M

$0.000/M

Context

128K

164K

Released

Mar 2025

May 2025

Favorites

ChatGPT-4o (March 2025)DeepSeek R1 0528

Movie

The Matrix

The Matrix

—

Album

Dark Side Of The Moon

Dark Side Of The Moon

—

Book

Братья Карамазовы

Братья Карамазовы

Фёдор Михайлович Достоевский

—

City

Kyoto

—

Game

The Legend of Zelda: Breath of the Wild

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

—

12 / 27

01

AI Board Game Logicreasoning

Tests an AI's ability to understand game rules and strategy

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

2 / 27

02

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

3 / 27

03

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

4 / 27

04

Xbox Controller SVG Artimage generation

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

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

5 / 27

05

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

6 / 27

06

Realistic AI Interviewconversation

Tests an AI's ability to simulate personalities and predict future trends

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

Sponsored

7 / 27

07

Minimalist Landing Pageweb design

Tests an AI's ability to generate a complete, working landing page

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025website

Try this prompt

DeepSeek R1 0528

DeepSeek R1 0528

Deepseek · May 2025website

Try this prompt

Vote

8 / 27

08

Mario Level UI Recreationweb design

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

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

Try this prompt

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9 / 27

09

Linear App Cloneweb design

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

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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 / 27

10

Framer-Style Animationweb design

Tests an AI's ability to create smooth web animations

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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 / 27

11

Dark Mode Dashboardweb design

Tests an AI's UI design skills with theming support

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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

12 / 27

12

Interactive Catan Boardweb design

Tests an AI's ability to create interactive web elements

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 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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