GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-4.5 vs GPT-5.3-Codex
Compare GPT-4.5 and GPT-5.3-Codex, both from OpenAI, context windows of 128K vs 400K, tested across 24 shared challenges. Updated February 2026.
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GPT-4.5vsGPT-5.3-Codex
24 fights queued
Why GPT-4.5?
Dead even. This one’s a coin flip.
Why GPT-5.3-Codex?
13.2x cheaper overall$1.75/M in · $14.00/M out
3.1x more context400K
12 months newerFeb 2026
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GPT-4.5GPT-5.3-Codex
12 / 24
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
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2 / 24
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
Vote
3 / 24
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
Vote
4 / 24
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
Vote
5 / 24
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Vote
6 / 24
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Good evening, everybody!
I’ve reached that age where my body sends me passive-aggressive emails.
Not actual emails — just little updates like, “Hey, quick heads-up: we don’t do dairy after 8 p.m. anymore.”
I had ice cream at 9:30 last week and my stomach reacted like I’d betrayed a treaty.
Getting older is weird because your injuries become mysterious.
When I was a kid, I got hurt doing cool stuff: biking off ramps, climbing fences.
Now I wake up like, “What happened to my neck?”
And my neck is like, “You slept... incorrectly.”
I bought one of those fitness watches.
I thought it would motivate me.
It mostly judges me in real time.
At 10 p.m. it buzzes: “Time to stand!”
No, it’s time to become one with this couch.
I don’t need a tiny wrist manager. I need encouragement.
Tell me, “Great job finding your phone charger on the first try.”
That’s growth.
And why does every app now need my location?
I downloaded a flashlight app — it asked where I live.
Why?
Are you trying to make sure I’m in the dark locally?
I ordered groceries online to save time, and now I have trust issues.
I said “6 bananas.” They sent six individual bananas wrapped separately like luxury gifts.
Who is this for?
Did I accidentally subscribe to Banana of the Month Club?
And every substitute is emotional chaos.
“Your spinach is unavailable, so we replaced it with marshmallows.”
That is not a substitute. That is a cry for help.
Customer service chats are incredible now.
You type: “Hi, I need help with my order.”
And the bot says, “I hear you. That must be frustrating.”
Oh wow, the robot went to therapy.
Then it gives you three options that have nothing to do with your problem:
- Reset password
- Track package
- Begin spiritual journey
Also, group chats are out of control.
One person sends, “Big news!”
Then disappears for four hours.
Now 12 adults are panicking at work like it’s a hostage negotiation.
By the time they return, the news is: “Got bangs.”
Ma’am, that is not “big news.” That is a hairstyle update.
I tried meditation to handle stress.
The app said, “Notice your thoughts and let them pass.”
My thoughts do not pass.
They set up folding chairs and start a committee meeting.
“Okay, item one: that embarrassing thing from 2009.”
Can we not?
It’s 2 a.m. My brain is doing reruns nobody asked for.
But I’m trying.
That’s adulthood, right? Just aggressively trying.
You drink water, stretch once, and suddenly feel superior.
You go to bed before midnight and wake up like, “I am unstoppable.”
Then by 3 p.m. you’re eating crackers over the sink, wondering what happened.
Thank you, you’ve been amazing!
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7 / 24
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
GPT-4.5
GPT-5.3-Codex
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8 / 24
Pokémon Battle UI Recreationweb design
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
Vote
Sponsored
9 / 24
Mario Level UI Recreationweb design
Recreate an interactive, classic Mario level in a single HTML file.
GPT-4.5
GPT-5.3-Codex
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10 / 24
Linear App Cloneweb design
Tests an AI's ability to replicate an existing UI with Tailwind CSS
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
Vote
11 / 24
Framer-Style Animationweb design
Tests an AI's ability to create smooth web animations
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
Vote
12 / 24
Interactive Catan Boardweb design
Tests an AI's ability to create interactive web elements
GPT-4.5
Nothing to show. The model went silent. Ominous.
GPT-5.3-Codex
Nothing to show. The model went silent. Ominous.
Vote
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