Compare OpenAI Codex Mini by OpenAI against Gemini 3 Flash Preview by Google AI, context windows of 200K vs 1.0M, tested across 10 shared challenges. Updated April 2026.
OpenAI Codex Mini and Gemini 3 Flash Preview are both competitive models. OpenAI Codex Mini costs $1.5/M input tokens vs $0.5/M for Gemini 3 Flash Preview. Context windows: 200K vs 1049K tokens. Compare their real outputs side by side below.
OpenAI Codex Mini is made by openai while Gemini 3 Flash Preview is from google. OpenAI Codex Mini has a 200K token context window compared to Gemini 3 Flash Preview's 1049K. On pricing, OpenAI Codex Mini costs $1.5/M input tokens vs $0.5/M for Gemini 3 Flash Preview.
No community votes yet. On paper, Gemini 3 Flash Preview has the edge — bigger model tier, newer, bigger context window.
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
10 fights queued
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:
How many are unique? All 5 jokes are unique.
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!
(The comedian walks onto the stage, adjusts the mic, and looks slightly exhausted.)
How’s everyone doing? Good? I’m doing okay. I’m at that age now where my body has started making "executive decisions" without consulting me first.
Like, I woke up yesterday with a back injury. Do you know how I got it? I slept. I slept too hard. Apparently, I’m now at a point in my life where unconsciousness is a high-impact sport. I didn’t fall out of bed. I didn't have a nightmare where I was fighting a bear. I just… existed horizontally for seven hours, and my spine was like, "Absolutely not. We’re going on strike."
And have you noticed how aggressive technology has become about our health? I have a smartwatch. I hate it. It’s like wearing a tiny, judgmental middle-manager on my wrist.
The other day, I was sitting on my couch, halfway through a bag of salt and vinegar chips—living my best life—and my watch vibrated. I thought, Oh, maybe someone loves me. No. I looked down and it just said: "Time to stand up!"
I’m in my own house! I paid for this couch! And this piece of plastic is telling me I’m failing at gravity. So I did what any rational person would do—I shook my arm vigorously for thirty seconds so the watch would think I was walking, then I went back to my chips. I’m outsmarting a robot just so I can be lazy in peace.
But the worst part is the "Stress Alerts." My watch will buzz and say, "Your heart rate is elevated. Would you like to do a breathing exercise?"
No, I would not! Do you know why my heart rate is up? Because you just vibrated on my arm and made me think I was having a medical emergency! You’re the source of the stress, Gary! I named my watch Gary. He’s a narc.
And don’t get me started on online shopping reviews. I spent two hours last night reading reviews for a spatula. Why? It’s a piece of silicone. But I’m there, scrolling through the comments, and I see a one-star review from a guy named Brenda.
Brenda says, "It was too floppy. 1 star."
Brenda, it’s a spatula! It’s designed to be floppy! What were you trying to do with it? Flip a manhole cover? But now, because of Brenda, I’m looking at my current spatula like it’s a traitor. I’m questioning my entire kitchen setup because a stranger on the internet had a bad Tuesday.
We have too much information now. Back in the day, if you wanted a toaster, you went to the store, you bought the one that looked the least like a fire hazard, and you went home. If it burnt the toast, you just learned to like the taste of charcoal.
Now? I have to compare the "heating consistency" of 45 different models. I’m reading "Toaster Enthusiast" forums. There are people out there who have passions for bread-browning technology. I saw a guy post a YouTube video called "The Toaster the Big Bread Companies Don't Want You to Know About."
It’s twenty minutes long! Who is watching this? Me. I am. At 2:00 AM. While my back hurts from lying down.
I miss being a kid when the only "data" I had was how fast I could run in my new sneakers. You’d put on a pair of Velcro Nikes and suddenly you were convinced you could break the sound barrier. You didn't need a watch to tell you to stand up. You stood up because there was a cool rock outside.
Now, I need an app to remind me to drink water. Water! The basic fuel of life. My phone goes ding and I’m like, "Oh, right. Hydration. I forgot I was a biological organism for a second. Thanks, Steve Jobs."
Anyway, I’m gonna go sit down now. My watch is already telling me I’ve reached my "social interaction limit" for the day.
(Comedian checks his wrist, nods, and walks off.)
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.
