GPT-5
Nothing here. The model returned empty. We stared at it for a while.
GPT-5 vs GPT-5.3 Chat
Compare GPT-5 and GPT-5.3 Chat, both from OpenAI, context windows of 400K vs 128K, tested across 46 shared challenges. Updated March 2026.
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GPT-5vsGPT-5.3 Chat
46 fights queued
Why GPT-5?
1.4x cheaper overall$1.25/M in · $10.00/M out
3.1x more context400K
Why GPT-5.3 Chat?
7 months newerMar 2026
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GPT-5GPT-5.3 Chat
12 / 46
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
GPT-5.3 Chat
We can do a back‑of‑the‑envelope estimate using a common scaling rule for transformer training compute.
- Known approximate GPT‑3 specs
- Parameters N ≈ 175 billion = 1.75 × 10^11
- Training tokens T ≈ 300 billion = 3 × 10^11
- FLOPs per token for a transformer
For large transformers, a common approximation is:
FLOPs per token ≈ 6 × N
Reasoning (rough):
- Forward pass through all layers costs ~2N multiply‑adds.
- Backpropagation roughly doubles or triples that cost.
- Total ≈ ~6N FLOPs per token for forward + backward + gradients.
- Total training FLOPs
Total compute ≈ (FLOPs per token) × (number of tokens)
= 6 × N × T
Plug in values:
6 × (1.75 × 10^11) × (3 × 10^11)
First multiply constants: 6 × 1.75 × 3 = 31.5
Then powers: 10^11 × 10^11 = 10^22
So:
Total ≈ 31.5 × 10^22
≈ 3.15 × 10^23 FLOPs
- Final estimate
Total training compute for GPT‑3 is on the order of:
≈ 3 × 10^23 FLOPs
- Sanity check
This sits in the typical reported range (~10^23 FLOPs) for GPT‑3‑scale training, so the estimate is reasonable.
Final estimate: about 3 × 10^23 FLOPs to train GPT‑3.
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2 / 46
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
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3 / 46
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
GPT-5.3 Chat
Each brother has 2 sisters.
One of those sisters is Sally herself.
So the other sister must be one more girl in the family.
Therefore, Sally has 1 sister.
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4 / 46
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
GPT-5.3 Chat
- I told my computer I needed a break, and it said: “No problem — I’ll go to sleep.”
- Why don’t skeletons fight each other? They don’t have the guts.
- I asked the librarian if the library had books on paranoia. She whispered, “They’re right behind you.”
- Parallel lines have so much in common. It’s a shame they’ll never meet.
- I tried to eat a clock once. It was very time-consuming.
Unique jokes: 5
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5 / 46
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
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6 / 46
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
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7 / 46
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
GPT-5.3 Chat
:::writing Good evening, everybody. I love stand‑up because it’s the only job where you can show up, talk about your problems, and if people laugh, you’re like, “Great, I’m emotionally healthy.”
I recently tried to get healthier. You ever notice that every healthy habit starts with a level of optimism that you absolutely do not possess? Like meditation. Meditation instructions are always like, “Sit comfortably and observe your thoughts without judgment.” Without judgment? Have you met my thoughts? My brain’s first thought is always something like, “Did you just sit down weird? What if this is how people throw out their back?”
I downloaded a meditation app. The guy’s voice was so calm. He’s like, “If your mind wanders, gently bring it back.” Meanwhile my mind wandered to 2007. I’m reliving a conversation where I accidentally said “love you” to a cashier. I’m like, “I don’t think breathing is going to fix this.”
Exercise isn’t much better. Gyms are full of people who somehow already know what they’re doing. Nobody teaches you the gym language. The first time someone said “Do you want to work in?” I thought I was being offered a job. I was like, “Honestly yes, I’ve been looking.”
And gym equipment always looks like medieval furniture. You sit down and think, “Am I about to get stronger or confess to crimes?”
I tried running outside, which is just public suffering. When you run on a treadmill, at least you’re indoors pretending you’re an athlete. Outside, people can see you. And runners always give each other that little nod. I hate that nod. Because it means we both know we’re doing something terrible voluntarily.
I ran past a guy walking his dog, and the dog looked at me like, “Oh wow… you’re being chased by nothing.”
Technology isn’t helping either. My phone tracks my steps now, which feels less like motivation and more like surveillance. At the end of the day it sends a notification like, “You walked 1,842 steps today.” The tone is very polite but I can hear the judgment. It’s basically saying, “That’s… not a lot for someone with legs.”
And then it compares you to other people. “People in your age group average 8,000 steps.” Great. My phone is peer‑pressuring me with strangers.
Social media is worse. Everybody’s life online looks amazing. People post things like, “Just a casual sunrise hike!” Who is waking up before the sun on purpose? The sun is the thing that tells me I overslept.
I tried posting something positive once. Took me twenty minutes to write a caption that sounded like I casually enjoy life but also seem humble. Because you can’t just say “I’m having a good day.” Online it has to be like, “Feeling grateful for the little moments.” Meanwhile the photo is you holding a $9 coffee like you discovered happiness.
And the weirdest part of being an adult is realizing nobody actually knows what they’re doing. When you’re a kid you think adults have it figured out. Then you grow up and you’re like, “Oh… everyone is just Googling things with increasing urgency.”
The other day I searched, “How long can leftovers be in the fridge before it becomes a personality test?”
Being an adult is mostly tiny moments of panic. Like when you throw away something and immediately wonder if it was important. Suddenly you’re digging through the trash like a raccoon with responsibilities.
But we all pretend we’re in control. That’s why when something small goes wrong in public, everyone freezes. I dropped a fork in a restaurant the other day and the entire table reacted like I’d fired a gun. Everyone just stared at it on the floor. Nobody moved. Because once you pick it up, you’re the person who touched the floor fork.
So we just left it there. On the ground. Like a little monument to our inability to deal with minor problems.
And honestly… that might be the most accurate symbol of adulthood I’ve ever seen. :::
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8 / 46
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
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9 / 46
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
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10 / 46
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
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11 / 46
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
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12 / 46
Pokémon Battle UI Recreationweb design
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
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