Updated Apr 16, 2025

Our Verdict

ChatGPT-4o (March 2025)

OpenAI o4-miniRunner-up

No community votes yet. On paper, ChatGPT-4o (March 2025) has the edge — bigger model tier, bigger context window.

OpenAI o4-mini is 3.4x cheaper per token — worth considering if cost matters.

Too close to call

Writing DNA

Style Comparison

Similarity

83%

ChatGPT-4o (March 2025) uses 329.7x more bold

ChatGPT-4o (March 2025)

OpenAI o4-mini

55%Vocabulary73%

24wSentence Length15w

0.52Hedging0.18

3.3Bold0.0

6.0Lists2.1

0.94Emoji0.00

0.63Headings0.00

0.05Transitions0.02

Based on 15 + 10 text responses

vs

Ask them anything yourself

ChatGPT-4o (March 2025)

OpenAI o4-mini

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

ChatGPT-4o (March 2025) 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)vsOpenAI o4-mini

25 fights queued

Why ChatGPT-4o (March 2025)?

Dead even. This one's a coin flip.

Why OpenAI o4-mini?

3.6x cheaper overall$1.10/M in · $4.40/M out

ChatGPT-4o (March 2025)OpenAI o4-mini

Input price

$5.00/M

$1.10/M

Output price

$15.00/M

$4.40/M

Context

128K

—

Released

Mar 2025

Apr 2025

Favorites

ChatGPT-4o (March 2025)OpenAI o4-mini

Movie

The Matrix

The Matrix

The Shawshank Redemption

The Shawshank Redemption

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 / 25

01

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025text

Here are five jokes:

I used to be addicted to soap, but I'm clean now.
Parallel lines have so much in common. It's a shame they'll never meet.
Why don't skeletons fight each other? They don't have the guts.
I bought some shoes from a drug dealer. I don't know what he laced them with, but I've been tripping all day.
How does Moses make his coffee? Hebrews it.

All five jokes are unique.

Try this prompt

Vote

2 / 25

02

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025svg

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

Try this prompt

Vote

3 / 25

03

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025svg

Try this prompt

Vote

4 / 25

04

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025text

Hey, everybody! Great to be here. Let's talk about the most important relationship in my life—coffee. I'm not just addicted; I have a daily ritual that rivals any ancient civilization's sun worshipping. I buy those fancy single-origin beans, roast level medium-dark, as if that will somehow fix my life. I line them up on the counter like a tiny army that's going to rescue me from the sheer terror of waking up. And then I spill it on my shirt within five seconds. I've turned "coffee stain" into a fashion statement—my own attempt at abstract art.

Speaking of personal disaster, let's talk about dating apps. You spend thirty minutes swiping, hoping someone will say something interesting. Instead you get: "Hey." And "What's up?" I've matched with people who tell me "I'm really just here to see what happens." That's like going to the grocery store and saying, "I'm really just here to get lost." We all know where this is going: you wind up in a conversation about their dog, and suddenly his dog's personality is more interesting than the human in the room.

Working from home has become a national sport, right? I've perfected the art of appearing busy on Zoom. Nodding, furrowing my brow. But the moment the camera's off, I'm Googling "Is watching cat videos a productive work break?" My partner walks behind me in pajamas with cereal in her hair, and I freeze mid-sip, terrified that she'll stroll into the frame like some uninvited cameo in an Ikea commercial.

Grocery shopping is its own form of trauma. You roll a cart—one wheel always refuses to cooperate—and you end up zigzagging down the aisle like you're training for a slalom race. Then you get to self-checkout, and the machine says, "Unexpected item in the bagging area." I look at the lettuce I just scanned. I whisper, "Lettuce? Are you hiding a barcode somewhere?" I weigh it again. I stare at the scale like it owes me an apology. By the time I'm done, the cashier has already broken down the line and started a book club.

Adulting means paying bills you didn't even notice until they're due. Last month I paid three subscriptions I never signed up for—two for meditation apps that I'll never open because I don't want to learn to breathe properly, and one for a sock-of-the-month club. I ask myself, "Do I really need a new sock every month?" Apparently, my feet do.

You know what the scariest adulting milestone is? Filing taxes. I found a form my accountant sent that reads like hieroglyphics. I'm staring at one page saying: "Report all virtual currency transactions." I haven't transacted any. I once Googled Bitcoin, got scared, and closed the browser. But now I'm supposed to report it? So I just scribbled, "None of your business," and mailed it in.

Anyway, I've gotta run before my coffee wears off. Thanks for listening to my caffeine-fueled life story—enjoy the rest of your night!

Try this prompt

Vote

5 / 25

05

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025text

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

Try this prompt

Vote

6 / 25

06

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025website

Try this prompt

Vote

Sponsored

7 / 25

07

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025website

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

Try this prompt

Vote

8 / 25

08

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025website

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

Try this prompt

Vote

9 / 25

09

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025website

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

Try this prompt

Vote

10 / 25

10

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025website

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

Try this prompt

Vote

11 / 25

11

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025website

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

Try this prompt

Vote

12 / 25

12

The Sentience Testreasoning

Tests an AI's ability to engage in philosophical discourse about AI rights

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025text

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

Try this prompt

Vote

This matchup has more rounds

13+ more head-to-head results. Free. Not a trick.

Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy