Compare Grok 4.20 Beta by xAI against Inception: Mercury by Inception, context windows of 2.0M vs 32K, tested across 31 shared challenges. Updated March 2026.
Grok 4.20 Beta and Inception: Mercury are both competitive models. Grok 4.20 Beta costs $2/M input tokens vs $10/M for Inception: Mercury. Context windows: 2000K vs 32K tokens. Compare their real outputs side by side below.
Grok 4.20 Beta is made by xai while Inception: Mercury is from inception. Grok 4.20 Beta has a 2000K token context window compared to Inception: Mercury's 32K. On pricing, Grok 4.20 Beta costs $2/M input tokens vs $10/M for Inception: Mercury.
No community votes yet. On paper, Grok 4.20 Beta has the edge — bigger model tier, newer, bigger context window, major provider backing.
This comparison gets 800+ views/month. Your brand could be here.
Advertise26 fights queued
Tests an AI's randomness and creativity
Here are 5 jokes:
Why don't skeletons fight each other? They don't have the guts.
Why did the scarecrow win an award? He was outstanding in his field.
Why don't eggs tell jokes? They'd crack each other up.
Why did the bicycle fall over? It was two tired.
Why did the math book look sad? Because it had too many problems.
How many are unique?
5 — All of them are distinct jokes.
Here are five jokes for you:
Why don't skeletons fight each other? Because they don't have the guts.
I told my wife she was drawing her eyebrows too high. She looked surprised.
Why did the scarecrow win an award? Because he was outstanding in his field.
What do you call a fake noodle? An impasta.
Why don't we ever tell secrets on a farm? Because the potatoes have eyes, the corn has ears, and the beans stalk.
All five jokes are unique in their setup and punchline.
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
Stand-up Routine: "Adulting is a Scam"
(Lights up. Comedian walks out with a coffee cup, takes a sip, immediately looks disappointed.)
You ever notice how nobody warns you that being an adult is just childhood with bills and worse snacks?
When I was a kid, I thought turning 18 meant I’d finally get respect, freedom, and the ability to eat ice cream for dinner every night. Turns out 18 just means the government looks at you and goes, “Cool, now pay for your own mistakes.”
My mom used to say, “One day you’ll understand.” Understand what? That I’d spend $47 on groceries and still eat cereal for three meals because cooking feels like a full-time job with no benefits? I bought kale once. One time. It’s still in my fridge judging me. That kale has been in there longer than some of my relationships.
And can we talk about how we all lied to ourselves about “figuring it out”? I’m 34. I still don’t know what I’m doing. I just got better at pretending. I have a 401k and a Spotify playlist called “Music to Cry in Traffic To.” That’s not growth, that’s just adding layers to the chaos.
The worst part? Dating as an adult. When you’re young, you break up because “he didn’t like my favorite band.” Now you break up because their credit score is a 520 and they think “emotional availability” is something you order on DoorDash. I went on a date last week where the guy spent forty minutes explaining his fantasy football league like it was the Federal Reserve. Bro, I barely understand my own taxes. I cannot emotionally invest in your make-believe football team.
And don’t get me started on homeownership. Everyone told me it was the responsible thing to do. So I bought a house. Now I’m responsible for a roof, a yard, and something called a “water heater” that sounds like a demon when it turns on at 2 a.m. I called a plumber last month and he looked at me like I was crazy when I said, “Can you just fix it without explaining what a ‘flapper valve’ is? I have three degrees and none of them prepared me for this.”
Honestly, I think the whole thing is a pyramid scheme. They tell you to go to school, get a job, buy a house, have kids… so you’re too exhausted to realize the whole system is held together by caffeine and people who say “it is what it is” unironically.
(pause, deadpan)
My therapist told me to “find my inner child.” I told her my inner child is currently hiding under the bed because the outer adult forgot to pay the electric bill again.
But hey… at least I’m not eating the kale.
(takes a final sip of coffee, makes a face)
This is cold. Just like my dreams.
Thank you, goodnight!
Tests an AI's ability to simulate personalities and predict future trends
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 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.
Generate a unique and simple recipe with common ingredients.
Create a starter plan for improving long-term health.
14+ head-to-head challenges below. Free account, no card.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy
Can you tell Claude from GPT?
Run your prompt blind. Judge outputs, not logos.
