Compare OpenAI Codex Mini by OpenAI against Gemini 2.5 Pro Preview 06-05 by Google AI, context windows of 200K vs 1.0M, tested across 10 shared challenges. Updated February 2026.
10 challenges
Tests an AI's randomness and creativity
Sure—here are five jokes:
All five are distinct. Number of unique jokes: 5.
Here are 5 jokes:
Why did the scarecrow win an award? Because he was outstanding in his field.
I have a joke about construction... But I'm still working on it.
What do you call a fake noodle? An Impasta.
I told my wife she was drawing her eyebrows too high. She looked surprised.
Why don't scientists trust atoms? Because they make up everything.
Zero. The real joke is asking an AI for original content.
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
[Comedian walks onstage]
Hey, everyone! Great to see you all tonight. I'm Jamie—if you thought that intro was enthusiastic, you should've seen me when I realized this place has Wi-Fi.
Seriously, though, I love stand-up. For one thing, I get to share all the weird stuff I secretly do in my apartment… and instead of calling the cops, you guys just laugh. That's high-quality entertainment right there.
So, the other day I'm in the self-checkout lane at the grocery store—because I'm the kind of person who's thrilled by the thought of scanning my own kale. Of course, there's always that one person holding up everyone behind them because they can't figure out how to scan a cucumber. Meanwhile, the machine flashes: "UNEXPECTED ITEM IN BAGGING AREA." It's staring at me like it's personally offended that I tried to buy almonds in instead of potato chips. I'm over here trying to reason with it:
"Look, buddy, I'm just trying to eat slightly healthier. Isn't that what we all want?"
Then it asks me, "Do you want a produce discount?" The only discount I want is one that lets me leave this line five minutes ago. I press "No," and the machine glares at me with a red light and calls for help like I'm smuggling avocados under my shirt.
My phone has ruined me. I can't have any thought longer than three seconds without Instagram interrupting me. I'll be in the shower—fresh shampoo, head full of suds—and in my brain:
"Did my neighbor's cat post another selfie? I need to check."
Fifteen minutes later I'm drying off, scrolling through cats wearing sweaters. Why are cats always more photogenic than me? They don't even try. They're just like, "You feed me, you click 'Like.'" I wish I could have a boundary like that—"Hey, you gave me pizza once; you can go ahead and like my vacation photos."
Anyone here stuck in a group chat you can't escape? There's always that one friend who forwards the exact same video one hundred times, and everybody else thinks it's the highlight of their week. I just mute my phone like it's an ex sending memes at 2 a.m. Then I wake up at dawn, bleary-eyed, thinking, "What did I miss?" I open my phone—and it's Bob celebrating his new air-fryer chicken recipe for the fifth time. Meanwhile, I burned my eggs so badly this morning that my smoke alarm filed a restraining order against me.
I decided to get in shape. I downloaded one of those workout apps promising "six-pack abs in six weeks." After day one, I collected six new excuses why I can't work out:
Yesterday I finally ran so hard I passed out. When I came to, my neighbor was standing over me yelling, "You know you're not supposed to lean on lampposts, right?" I told him, "As soon as lampposts start offering aerodynamic support, I'll consider trusting them."
Alright, folks, that's my time. If you ever feel judged by a machine or betrayed by a group chat, come find me—I'll be the one in the self-checkout line, trying to convince a barcode scanner that kale is, in fact, a food. Thanks so much—you've been awesome!
(Stands at the mic, looks around nervously)
Alright, how's everyone doing? Good, good.
You know, I feel like we're living in a world where everything is designed to be "more convenient," but it's really just more work for us. We're being tricked into doing all the jobs.
My main enemy right now is the self-checkout machine at the grocery store. You k
now the one. It's not a mach
ine, it's a passive-aggressive robot judge. It has one job: to weigh things. And
it is TERRIBLE at it.
The other day, I'm buying a single bag of salad. That's it. I'm trying to be hea
lthy, which is already a str
essful situation. I scan the bag. The machine says, (in a chipper, robotic voic
e) "Please place the item in the bagging area."
Okay, easy enough. I place the bag of lettuce, which weighs less than my conscie nce, into the plastic bag.
And the machine just loses its mind. The light starts flashing, a siren I've nev
er heard before goes off. (
In a panicked robot voice) "UNEXPECTED ITEM IN THE BAGGING AREA. PLEASE REMOVE
THIS ITEM."
What unexpected item?! The bag? The bag I'm putting the item into? In the bag
ging area? What did you thi
nk was going to happen here, you glorified scale? Did you expect me to just levi
tate my groceries home?
So I take the salad out. The machine goes quiet. I put it back in. The siren goe
s off again. We do this danc
e three times. Me, the salad, and this deeply confused robot. People are startin
g to stare. I look like I'm trying to shoplift the saddest thing in the entire s
tore.
Finally, the dreaded message comes up: "Please wait for assistance." And the lig
ht on top starts flashing. I
t's the retail walk of shame.
And this teenager, who has the energy of someone who's been awake for 72 hours, just saunters over. He 't even look at me. He just sighs, types in a secret code like he's defusing a b omb, hits the screen three times, and walks away.
He fixed it. And I'm left standing there, thinking… what was the code? What's th e secret? Was it 1-2-3-4? Wa s it "lettuce"? I need to know! Because this is my life now. I'm a part-time, un paid, deeply incompetent grocery clerk.
And my phone is no better. It's definitely listening to me. But it's a terrible
listener. It's like it only
picks up every third word. I was talking to my friend about needing a new lamp f
or my desk. A lamp. For the next three weeks, all my Instagram ads were for… bab
y lambs. Live ones.
Where am I gonna put a lamb? I don't have a yard! I guess I could try to put it
in the bagging area at the s
upermarket, but I think we all know how that would end.
Thank you, goodnight
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
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.
Generate SVG art of a randomly chosen animal in a setting of its choosing.
Recreate a classic, retro, macOS Desktop UI — make it interactive and nostalgic, make it as interactive as you can, you can be creative.. Feel free to showcase your skills. The entire application must be a single-page self-contained HTML file.
