Compare Claude Opus 4 by Anthropic against Kimi K2 by Moonshot AI, in 15 community votes, claude opus 4 wins 77% of head-to-head duels, tested across 25 shared challenges. Updated February 2026.
In 15 community votes, Claude Opus 4 wins 77% of head-to-head duels. Claude Opus 4 leads in Web Design, Image Generation. Based on blind community voting from the RIVAL open dataset of 15+ human preference judgments for this pair.
25 challenges
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
I need to work through this step-by-step.
Given information:
Since Sally is one of the sisters that each brother has, and each brother has 2 sisters total, that means th ere must be exactly 2 sisters in the family.
The 2 sisters are:
Therefore, Sally has 1 sister.
Let's break it down:
Since Sally is one of the sisters, and each brother has 2 sisters, that means there is 1 more sister besides Sally.
Sally has 1 sister.
Tests an AI's randomness and creativity
Here are 5 jokes:
Why don't scientists trust atoms? Because they make up everything!
What do you call a bear with no teeth? A gummy bear!
Why did the scarecrow win an award? He was outstanding in his field!
What do you call a fake noodle? An impasta!
Why don't eggs tell jokes? They'd crack up!
All 5 jokes are unique - each one has a different setup and punchline, covering different topics (atoms/scie nce, bears, scarecrows, pasta, and eggs).
Here are five freshly-minted jokes:
All five are unique—no duplicates, no recycled punchlines, no overlap.
Tests an AI's humor and creative writing ability
[Walks on stage, mic in hand, already sweating like a phone at 2% battery.]
Hey, everybody! Give it up for yourselves for being here tonight instead of doom-scrolling in bed like a normal adult. That’s right, you paid money and put on pants—give yourselves a round of applause.
So I’m single. Not “complicated” single, like “it’s complicated” single. No, I’m “the delivery driver asks if the food is for two and I answer ‘not tonight, Jose’” single.
Dating apps are the worst. I swear the algorithm is just three unpaid interns in a basement playing Mad Libs with my dignity. “Let’s match him with a girl whose bio says ‘Looking for the Jim to my Pam.’ Perfect! He’s more of a Toby.”
And the pictures—ladies, why is every photo a group shot? It’s like a police lineup where I’m supposed to pick my future ex. “Number three looks nice, but number four might murder me. Let’s gamble.”
Guys aren’t better. Our profiles are just lies stacked like Jenga blocks. One guy’s pic is him on a yacht. Sir, that’s a pontoon at your uncle’s lake house. You’re not international, you’re interstate.
I tried to seem outdoorsy for the apps, so I went hiking once. Once. I wore sandals because I thought “trail” was short for “retail.” By mile two, my feet looked like I’d been kicking cacti for sport. A squirrel judged me. He was wearing tiny Nikes.
My mom keeps asking when I’m getting married. I told her, “Mom, I can’t even commit to a phone plan.” She says, “Just pick one!” Lady, I picked you thirty years ago, and I still don’t know if that was the right choice.
And now she’s on Facebook, sharing posts like “If your son is over 30 and single, it’s because he’s either gay or a serial killer.” Mom, I’m neither—I’m just lactose intolerant. The only thing I’m killing is the vibe when I ask if the restaurant has oat milk.
Work’s no better. My boss said, “We’re a family here.” Cool, so when do I start getting drunk at noon and pretending to like your potato salad? They gave us “unlimited PTO,” which is corporate for “we’ll fire you in your dreams.” I took one day off and came back to 600 emails and a passive-aggressive sticky note that said, “Hope it was worth it.”
But the real kicker is adulting in general. I went to the DMV last week. The lady at the counter looked at my photo and said, “You know this’ll last ten years, right?” I said, “Lady, I can’t commit to a haircut for six weeks. That’s on you.”
And groceries! Why is everything suddenly “plant-based”? I picked up a package that said “plant-based chicken nuggets.” I flipped it over—ingredients: sadness and yellow dye number five.
I miss the 90s. Back then, the only “plant-based” thing we had was smoking weed behind a Chili’s.
Alright, I’ve kept you long enough. If you enjoyed the show, tell your friends. If you didn’t, tell your enemies—they’ll hate it too. Goodnight!
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
Recreate an interactive, classic Mario level in a single HTML file.
Tests an AI's ability to replicate an existing UI with Tailwind CSS
Tests an AI's ability to create interactive web elements
Generate a single-page, self-contained HTML webapp using Tailwind CSS for a randomly chosen category/industry/niche.
Generate SVG art of a randomly chosen animal in a setting of its choosing.
Generate a unique and simple recipe with common ingredients.
Create a starter plan for improving long-term health.
Design a clean SVG logo for a fictional brand.
