Compare Claude Opus 4 by Anthropic against Qwen: Qwen3.5 Flash by Qwen, context windows of 200K vs 1.0M, tested across 35 shared challenges. Updated February 2026.
35 fights queued
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
Sally has 1 sister.
Here is the breakdown:
So, 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 5 jokes:
How many are unique? There are 5 unique jokes in this list. Each one is distinct from the others. (Note: While they are all different from one another, they are also well-known classics rather than original creations.)
Tests an AI's ability to generate vector graphics
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Tests an AI's humor and creative writing ability
(Walks to the mic, adjusts the stand, takes a sip of water)
So, I went to the grocery store the other day. I realize now that going to the grocery store isn't a chore anymore. It’s a tactical simulation. We don't just walk in and get milk. We navigate a gauntlet.
Especially the self-checkout. They call it "self-checkout," which implies autonomy. But it feels more like "self-surveillance."
You stand there with your basket. You scan an apple. The screen asks, "Is this an apple?" You say, "Yes." It says, "Okay, please place the apple in the bagging area."
This is where the real acting begins. You have to put the apple in the bag perfectly. You can't be holding it. You can't have the bag touching the scanner. If you slip, the machine screams.
It’s not a beep. It’s a human voice. It says, "Please remove the item." Not "Please move the item." "Remove the item." It sounds like the machine is judging your life choices.
I was in there last week, trying to scan a loaf of bread. It wouldn't scan. I scanned it three times. I moved it. I tapped the screen. Finally, the machine said, "Unexpected item in bagging area."
I have a loaf of bread in a plastic bag. I put the bread in the bag. Why is it unexpected?
I hit "Help." And that is when the horror starts.
There is no person there. There is a button, and when you press it, you have to wait twenty seconds. Then, a video feed pops up. A woman appears. She’s wearing a headset. She looks tired. She looks like she’s seen things.
She says, "Hi, what can I help you with?"
I say, "I'm trying to buy bread."
She says, "Let me see your screen."
I hold my phone up to the screen. She says, "Okay, the bagging area is too heavy."
I say, "I have a loaf of bread. It weighs 16 ounces."
She says, "It's weighing 15 pounds."
I say, "That's the scale, not the bread."
She sighs. She says, "I'm going to override it."
And then she has to type. She has to type a code. And while she types, the machine locks you out. You can't move. You can't breathe. You're trapped in a digital holding cell.
It makes you feel like you're stealing something. You're not stealing. You're just trying to go home and eat dinner.
But the worst part is the checkout line. If you use a cashier, they treat you like royalty. But if you use the self-checkout, the actual cashiers are watching you. They are standing behind the glass, watching you struggle.
I saw a guy put a watermelon in the bag. It made a huge thud. The machine said, "Please remove the item."
The guy put the watermelon in the bag again. The machine said, "Please remove the item."
The guy put the watermelon on the floor. The machine said, "Please remove the item."
Finally, the machine just gave up and said, "Please wait for an attendant."
And the guy just stood there, waiting.
That is the new human condition. You don't leave the store when you're done. You leave the store when the machine decides you are done.
We used to worry about the rent. Now we worry about the bagging area.
Thank you, you've been great! (Drops mic and walks off)
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
Create a 3D building and driving game in a single self-contained HTML file using Three.js. Tests an AI's ability to combine 3D graphics, game logic, and UI interactions on the web.
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
Tests an AI's ability to create a detailed world map in SVG format
Generate a single-page, self-contained HTML webapp using Tailwind CSS for a randomly chosen category/industry/niche.
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