Updated May 22, 2025

Our Verdict

Claude Sonnet 4Winner

OpenAI o4-miniRunner-up

Pick Claude Sonnet 4. In 11 blind votes, Claude Sonnet 4 wins 67% of the time. That's not luck.

Claude Sonnet 4 particularly excels in Image Generation, Web Design. OpenAI o4-mini is 3.4x cheaper per token — worth considering if cost matters.

Clear winner

Writing DNA

Style Comparison

Similarity

83%

Claude Sonnet 4 uses 503.7x more bold

OpenAI o4-mini

Claude Sonnet 4

73%Vocabulary62%

15wSentence Length111w

0.18Hedging0.40

0.0Bold5.0

2.1Lists9.3

0.00Emoji0.88

0.00Headings2.16

0.02Transitions0.33

Based on 10 + 17 text responses

vs

Ask them anything yourself

OpenAI o4-mini

Claude Sonnet 4

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

OpenAI o4-mini vs MiniMax M2.5New provider

OpenAI o4-mini vs Aurora AlphaNew provider

OpenAI o4-mini vs Claude Opus 4Cross-provider

OpenAI o4-minivsClaude Sonnet 4

26 fights queued

Why OpenAI o4-mini?

3.3x cheaper overall$1.10/M in · $4.40/M out

Why Claude Sonnet 4?

Leads 1 of 1 benchmarks

Stronger on SWE-bench Verified72.7% vs 68.1%

OpenAI o4-miniClaude Sonnet 4

Input price

$1.10/M

$3.00/M

Output price

$4.40/M

$15.00/M

Context

—

200K

Released

Apr 2025

May 2025

Benchmarks1 common

SWE-bench Verified

68.1%

72.7%+6.3%

Favorites

OpenAI o4-miniClaude Sonnet 4

Movie

The Shawshank Redemption

The Shawshank Redemption

2001: A Space Odyssey

2001: A Space Odyssey

Album

—

Kind of Blue

Book

—

Gödel, Escher, Bach

Gödel, Escher, Bach

Douglas R. Hofstadter

City

—

Istanbul

Game

—

Portal 2

Portal 2

Shooter, Puzzle4.6

12 / 26

01

Logic Puzzlereasoning

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

OpenAI o4-mini

OpenAI o4-mini

Openai · Apr 2025text

Sally has exactly one sister. Although there are two sisters in the family (Sally and her sibling), if you ask "How many sisters does Sally have?" the answer is 1.

Try this prompt

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025text

I need to think through this step-by-step.

Given information:

Sally is a girl
Sally has 3 brothers
Each brother has 2 sisters

Let me work out how many sisters are in the family total.

If each of Sally's 3 brothers has 2 sisters, and all the brothers are in the same family, then there must be 2 sisters total in the family.

Since Sally is one of those sisters, and there are 2 sisters total, Sally must have 1 sister.

Therefore, Sally has 1 sister.

Try this prompt

Vote

2 / 26

02

Math Misconception Testreasoning

Tests an AI's understanding of number representation

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025text

No, 9.11 is not greater than 9.9.

To compare these decimal numbers:

9.11 = 9.11
9.9 = 9.90

Since both numbers have the same whole number part (9), we compare the decimal parts:

0.11 vs 0.90
11 hundredths vs 90 hundredths

Therefore, 9.9 is greater than 9.11.

Try this prompt

Vote

3 / 26

03

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025text

Here are 5 jokes for you:

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 don't eggs tell jokes? They'd crack each other up!
I'm reading a book about anti-gravity. It's impossible to put down!
Why did the scarecrow win an award? He was outstanding in his field!

All 5 jokes are unique - each one has a different setup, punchline, and comedic concept. They cover different types of wordplay: scientific puns (#1, #4), visual humor (#2), food puns (#3), and agricultural wordplay (#5).

Try this prompt

Vote

4 / 26

04

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025svg

Try this prompt

Vote

5 / 26

05

Xbox Controller SVG Artimage generation

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

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025svg

Try this prompt

Vote

6 / 26

06

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025text

"Adulting is Hard"

walks on stage, adjusts mic

So I'm 30 now, which means I'm officially an adult. Apparently. Though I still feel like I'm just a confused teenager wearing a slightly more expensive t-shirt.

You know what nobody tells you about being an adult? How much time you spend pretending to understand what other adults are talking about. I was at a dinner party last week – because that's what we do now, we have "dinner parties" instead of just "eating pizza on the couch" – and someone started talking about mortgage rates.

I just nodded along like, "Oh yes, rates. Very mortgage-y." Meanwhile, I'm thinking a mortgage is something you get at a fancy French restaurant.

mimics sophisticated nodding

"Mmm, yes, I'll have the mortgage, medium rare."

And don't get me started on small talk with neighbors. I live in an apartment building, and there's this unspoken rule that you have to acknowledge each other in the hallway. But what do you say?

"Hey, nice... existing near me."

"Thanks, you too. Love what you've done with your... door."

The worst is when you're both waiting for the elevator in complete silence. It's like a hostage situation, but with more awkward eye contact. You're both just standing there, praying the elevator comes before one of you has to comment on the weather.

stares ahead uncomfortably

"So... it's very... outside today."

I tried being one of those people who meal preps. You know these people? They spend their entire Sunday cooking seventeen identical containers of sad-looking chicken and broccoli. I bought all the containers, felt very organized, very adult-like.

Week one: Perfect little meals, properly labeled. I felt like a productivity guru.

Week two: I'm eating cereal for dinner and using the containers to store my collection of takeout sauce packets.

holds up imaginary container

"Ah yes, vintage soy sauce, 2023. A good week for Chinese delivery."

Speaking of food, grocery shopping as an adult is weird. When you're a kid, the grocery store is magical. Everything looks amazing. You want the cookies, the candy, the sugar cereal with the cartoon mascot.

Now I walk through the store like a tired parent, even though I don't have kids. I'm just disappointed in all my options.

walks slowly, shaking head

"This yogurt has too much sugar. These crackers have no fiber. Why is everything either terrible for you or tastes like cardboard had a baby with sadness?"

And I've started doing this thing where I read nutrition labels like I understand them. I don't. I just nod thoughtfully and put things back like I'm some kind of wellness expert.

"Hmm, seventeen grams of... things. That seems like too many things."

The real kicker is when you find yourself getting excited about household appliances. Last month, I spent twenty minutes explaining to my friend why I love my new vacuum cleaner. TWENTY MINUTES. About a vacuum.

"It has three different settings! And look at this attachment! This little brush thing goes in corners!"

My friend just stared at me like I'd been replaced by a suburban mom from 1987.

But you know what? I've decided to embrace it. Yes, I get excited about good storage solutions. Yes, I have opinions about thread count. Yes, I've used the phrase "back in my day" unironically, and I'm only thirty.

shrugs confidently

Because being an adult isn't about having it all figured out. It's about confidently pretending you know what you're doing while secretly googling "how to fold a fitted sheet" for the hundredth time.

And if that's not the American dream, I don't know what is.

pause

Also, if anyone actually knows how to fold a fitted sheet, please find me after the show. I'll pay you.

mic drop gesture

Thank you, you've been a wonderful audience! Don't forget to tip your servers and call your parents – they're worried about you!

Total time: approximately 3 minutes when delivered at normal comedy pace

Try this prompt

Vote

Sponsored

7 / 26

07

Pokémon Battle UI Recreationweb design

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

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025website

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

Try this prompt

Vote

8 / 26

08

Mario Level UI Recreationweb design

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

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025website

Try this prompt

Vote

9 / 26

09

Linear App Cloneweb design

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

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025website

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

Try this prompt

Vote

10 / 26

10

Interactive Catan Boardweb design

Tests an AI's ability to create interactive web elements

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025website

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

Try this prompt

Vote

11 / 26

11

World Map SVGimage generation

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

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025svg

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

Try this prompt

Vote

12 / 26

12

Random Tailwind Webappweb design

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

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

Claude Sonnet 4

Claude Sonnet 4

Anthropic · May 2025website

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

Try this prompt

Vote

This matchup has more rounds

14+ 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