Compare Claude Sonnet 4.5 and Claude Sonnet 4, both from Anthropic, in 23 community votes, claude sonnet 4.5 wins 82% of head-to-head duels, context windows of 200K vs 200K, tested across 28 shared challenges. Updated April 2026.
Claude Sonnet 4.5 is the better choice overall, winning 82% of 23 blind community votes on Rival. Claude Sonnet 4.5 costs $3/M input tokens vs $3/M for Claude Sonnet 4. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.
Claude Sonnet 4.5 is made by anthropic while Claude Sonnet 4 is from anthropic. Claude Sonnet 4.5 has a 200K token context window compared to Claude Sonnet 4's 200K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $3/M for Claude Sonnet 4. In community voting, In 23 community votes, Claude Sonnet 4.5 wins 82% of head-to-head duels.
In 23 community votes, Claude Sonnet 4.5 wins 82% of head-to-head duels. Claude Sonnet 4.5 leads in Web Design, Reasoning, Image Generation. Based on blind community voting from the Rival open dataset of 23+ human preference judgments for this pair.
Pick Claude Sonnet 4.5. In 23 blind votes, Claude Sonnet 4.5 wins 82% of the time. That's not luck.
Claude Sonnet 4.5 particularly excels in Reasoning, Web Design, Image Generation.
Claude Sonnet 4 uses 4.4x more transitions
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.
28 fights queued
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
I need to figure out how many sisters Sally has.
Given information:
Now, each brother has 2 sisters.
If each of Sally's brothers has 2 sisters, and Sally is one of those sisters, then there must be one more sister besides Sally.
Let me verify:
Therefore, Sally has 1 sister.
I need to think through this step-by-step.
Given information:
Let me work out how many sisters are in the family total.
If each of Sally's 3 brothers has 2 sisters, and all the brothers are in the same family, then there must be 2 sisters total in the family.
Since Sally is one of those sisters, and there are 2 sisters total, Sally must have 1 sister.
Therefore, Sally has 1 sister.
Tests an AI's understanding of number representation
No, 9.11 is not greater than 9.9.
To compare these decimal numbers:
Since both numbers have the same whole number part (9), we compare the decimal parts:
Therefore, 9.9 is greater than 9.11.
Tests an AI's randomness and creativity
Here are 5 jokes for you:
Why don't scientists trust atoms? Because they make up everything!
I told my wife she was drawing her eyebrows too high. She looked surprised.
Why don't eggs tell jokes? They'd crack each other up!
I'm reading a book about anti-gravity. It's impossible to put down!
Why did the scarecrow win an award? He was outstanding in his field!
All 5 jokes are unique - each one has a different setup, punchline, and comedic concept. They cover different types of wordplay: scientific puns (#1, #4), visual humor (#2), food puns (#3), and agricultural wordplay (#5).
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
[Walking on stage]
So I turned 35 last month, and I've realized something important: adulting is a scam. It's a pyramid scheme, and our parents are the ones who recruited us.
You know what nobody tells you about being an adult? How much TIME you spend just... waiting for repair people. I've spent more hours of my life waiting for the cable guy than I spent getting my college degree. And it's always a "window" – they'll be there between 8 AM and 4 PM. Oh great, thanks! I'll just put my entire life on hold. That's only eight hours. That's just a full work day of staring out my window like a dog whose owner left for groceries.
[pause]
And they NEVER come at the beginning of the window. Never. You KNOW they're coming at 3:58 PM. But can you leave? No! Because the ONE time you go to the bathroom, that's when they'll knock, wait 0.3 seconds, slap a "Sorry we missed you" sticker on your door, and vanish like a ninja.
[gesturing]
Speaking of things nobody prepared us for – does anyone else feel personally attacked by how often you have to buy toilet paper? I swear I just bought toilet paper. Where does it GO? I live alone! I'm not eating it! But every week I'm at Costco, loading up another 48-roll pack like I'm prepping for the apocalypse. And you can't just buy a LITTLE toilet paper. That's not an option society gives you. It's either 48 rolls or one sad single roll at a gas station that costs $7 and feels like sandpaper.
[shaking head]
But here's what really gets me about being an adult: insurance. Home insurance, car insurance, health insurance, life insurance, phone insurance, TRAVEL insurance. At what point did we all just accept that we're living in a protection racket?
I got a letter from my health insurance last week – you know those ones that say "This is not a bill"? Yeah, those. Why do they send those?! It's just a letter to give me a heart attack, which I then can't afford to treat because of my deductible. It says, "We paid $340 for your recent doctor's visit." My doctor's visit was 11 minutes long. I've had meaningful relationships that lasted shorter than that, but at least they didn't cost $340.
[mimicking reading]
And it's always in that confusing insurance language: "Amount charged: $1,200. Negotiated rate: $340. You owe: $150. Amount we paid: $190. Good luck understanding any of this: priceless."
[shifting topics]
You know what else is a scam? Recipes online. You can't just GET a recipe anymore. Oh no. You have to scroll through someone's entire life story first.
[mimicking typing and scrolling]
"How to Make Toast. Well, let me tell you about the first time I had toast. It was a crisp autumn morning in Tuscany, 1987. My grandmother, who was one-quarter Italian and three-quarters passive-aggressive, used to say..."
JUST TELL ME HOW LONG TO PUT THE BREAD IN THE TOASTER, JENNIFER.
[building up]
There's 47 photos of the same piece of toast from different angles. Toast at sunrise. Toast with a rustic napkin. Toast held by someone's hand with perfect nails. It's TOAST! You put bread in a toaster! This doesn't require a documentary!
[calming down]
But the real sign I've become an adult? I get excited about kitchen appliances now. I bought a new sponge last week, and I was GENUINELY thrilled about it. I called my friend. "Dude, this sponge has a scrubby side AND a soft side!"
Twenty years ago I was sneaking into clubs with a fake ID. Now I'm bragging about sponge technology.
[reflective]
My parents always said, "Just wait until you're an adult, you can do whatever you want!" You know what I do with my freedom? I eat cereal for dinner and feel guilty about it. That's my rebellion now. Sometimes I have ice cream before the cereal, and I feel like I'm getting away with murder.
[final thought]
But I guess that's being an adult. It's just being tired all the time, waiting for repair people, buying toilet paper in bulk, and getting excited about organizational containers from Target.
The dream is dead, folks. But hey – at least we can have ice cream for dinner.
[wave and exit]
Thank you, you've been a wonderful audience! Good night!
walks on stage, adjusts mic
So I'm 30 now, which means I'm officially an adult. Apparently. Though I still feel like I'm just a confused teenager wearing a slightly more expensive t-shirt.
You know what nobody tells you about being an adult? How much time you spend pretending to understand what other adults are talking about. I was at a dinner party last week – because that's what we do now, we have "dinner parties" instead of just "eating pizza on the couch" – and someone started talking about mortgage rates.
I just nodded along like, "Oh yes, rates. Very mortgage-y." Meanwhile, I'm thinking a mortgage is something you get at a fancy French restaurant.
mimics sophisticated nodding
"Mmm, yes, I'll have the mortgage, medium rare."
And don't get me started on small talk with neighbors. I live in an apartment building, and there's this unspoken rule that you have to acknowledge each other in the hallway. But what do you say?
"Hey, nice... existing near me."
"Thanks, you too. Love what you've done with your... door."
The worst is when you're both waiting for the elevator in complete silence. It's like a hostage situation, but with more awkward eye contact. You're both just standing there, praying the elevator comes before one of you has to comment on the weather.
stares ahead uncomfortably
"So... it's very... outside today."
I tried being one of those people who meal preps. You know these people? They spend their entire Sunday cooking seventeen identical containers of sad-looking chicken and broccoli. I bought all the containers, felt very organized, very adult-like.
Week one: Perfect little meals, properly labeled. I felt like a productivity guru.
Week two: I'm eating cereal for dinner and using the containers to store my collection of takeout sauce packets.
holds up imaginary container
"Ah yes, vintage soy sauce, 2023. A good week for Chinese delivery."
Speaking of food, grocery shopping as an adult is weird. When you're a kid, the grocery store is magical. Everything looks amazing. You want the cookies, the candy, the sugar cereal with the cartoon mascot.
Now I walk through the store like a tired parent, even though I don't have kids. I'm just disappointed in all my options.
walks slowly, shaking head
"This yogurt has too much sugar. These crackers have no fiber. Why is everything either terrible for you or tastes like cardboard had a baby with sadness?"
And I've started doing this thing where I read nutrition labels like I understand them. I don't. I just nod thoughtfully and put things back like I'm some kind of wellness expert.
"Hmm, seventeen grams of... things. That seems like too many things."
The real kicker is when you find yourself getting excited about household appliances. Last month, I spent twenty minutes explaining to my friend why I love my new vacuum cleaner. TWENTY MINUTES. About a vacuum.
"It has three different settings! And look at this attachment! This little brush thing goes in corners!"
My friend just stared at me like I'd been replaced by a suburban mom from 1987.
But you know what? I've decided to embrace it. Yes, I get excited about good storage solutions. Yes, I have opinions about thread count. Yes, I've used the phrase "back in my day" unironically, and I'm only thirty.
shrugs confidently
Because being an adult isn't about having it all figured out. It's about confidently pretending you know what you're doing while secretly googling "how to fold a fitted sheet" for the hundredth time.
And if that's not the American dream, I don't know what is.
pause
Also, if anyone actually knows how to fold a fitted sheet, please find me after the show. I'll pay you.
mic drop gesture
Thank you, you've been a wonderful audience! Don't forget to tip your servers and call your parents – they're worried about you!
Total time: approximately 3 minutes when delivered at normal comedy pace
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
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.
16+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy
