Claude Opus 4.5 vs ChatGPT-4o (March 2025)
Compare Claude Opus 4.5 by Anthropic against ChatGPT-4o (March 2025) by OpenAI, tested across 32 shared challenges. Updated February 2026.
FAQ
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Claude Opus 4.5vsChatGPT-4o (March 2025)
27 challenges
Why Claude Opus 4.5?
8 months newerNov 2025
Why ChatGPT-4o (March 2025)?
No standout advantages
Favorites
Claude Opus 4.5ChatGPT-4o (March 2025)
12 / 27
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
ChatGPT-4o (March 2025)
Vote
2 / 27
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
Here are 5 jokes:
-
Why don’t skeletons fight each other?
Because they don’t have the guts. -
I told my computer I needed a break…
Now it won’t stop sending me vacation ads. -
Parallel lines have so much in common.
It’s a shame they’ll never meet. -
What do you call a fish wearing a bowtie?
Sofishticated. -
I asked the librarian if the library had books on paranoia.
She whispered, "They're right behind you..."
All 5 jokes are unique — none of them repeat or share the same punchline.
Vote
3 / 27
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
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4 / 27
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
No content available for this output.
Vote
5 / 27
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
Sure. Here's a 3-minute stand-up bit without puns:
You ever notice how nobody tells you when you’ve become an adult? It’s not your 18th birthday. That’s a scam. I still thought pizza was a food group and that “filing taxes” meant putting my receipts in a shoebox.
The real moment you become an adult is when you get excited about a new sponge.
I bought a sponge last week and I was like, “Ooh, it’s dual-sided!”
My ancestors crossed oceans and fought wars so I could stand in my kitchen like, “This one’s for scrubbing and this one’s for caressing the plate.”
You know you’re an adult when you have a favorite burner on the stove.
Don’t act like you don’t.
You’re looking at the stovetop like, “Front-left, you and me, we’ve been through some things.”
And what is it with “adult” dinner parties? When you’re a kid, you go to a friend’s house and it’s pizza, games, screaming, maybe someone throws up.
As an adult, it’s like: “Let’s gather around the charcuterie board and discuss real estate and gut health.”
Some guy is swirling wine going, “This has notes of blackberry and oak.”
Meanwhile I’m in the corner like, “This cheese cube tastes like feet and joy.”
Also—can we talk about how nobody knows how to say "charcuterie"?
Everyone says it like they’re casting a spell.
“Sharka—shkoo—chew—whatever, the meat tray.”
Dating in your 30s is wild too. You used to ask, “What’s your favorite band?” Now it’s, “What’s your relationship with your mother like?”
And you have to be honest.
Like: “Well, she’s alive. So that’s complicated.”
I went on a date recently and the guy said, “I’m just looking for someone chill, no drama.”
Sir. That is code for: “I want zero accountability and I ghost people when they express emotions.”
If you ever hear someone say “no drama,” that is the drama. That’s like someone saying “I’m really humble.”
No, you’re not. You thought about saying it out loud. You rehearsed it in the mirror.
Anyway, thanks for listening. I gotta get home. My sponge misses me.
Let me know if you want it tailored to a specific style or theme.
Vote
6 / 27
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
No content available for this output.
Vote
7 / 27
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
Claude Opus 4.5
ChatGPT-4o (March 2025)
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8 / 27
Mario Level UI Recreationweb design
Recreate an interactive, classic Mario level in a single HTML file.
Claude Opus 4.5
ChatGPT-4o (March 2025)
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9 / 27
Linear App Cloneweb design
Tests an AI's ability to replicate an existing UI with Tailwind CSS
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
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10 / 27
Framer-Style Animationweb design
Tests an AI's ability to create smooth web animations
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
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11 / 27
Dark Mode Dashboardweb design
Tests an AI's UI design skills with theming support
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
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12 / 27
Interactive Catan Boardweb design
Tests an AI's ability to create interactive web elements
Claude Opus 4.5
No content available for this output.
ChatGPT-4o (March 2025)
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12 of 27