Run Detail
completedcrouton-alphaRecorded for these videos
27:18Gemini 4 Hydrogen: Cheaper Tokens, More Expensive Answers?
Nov 13, 2026 · YouTube
18:40ERNIE 5.5 Flash Preview vs GLM 5.3 Flash: Baidu's new model is very impressive!
Nov 11, 2026 · YouTube
36:22Fable 5.2 robbing me blind, plus: Nex AGI's N2.6 vs GLM 5.3 Flash
Nov 11, 2026 · YouTube
14:03Gemini 4 Carbon: Can it handle my challenges? (First look with one-shot coding tests)
Nov 10, 2026 · YouTube
47:51Ranking major U.S. Open-Weights Models. (Where does Ripple 65B fit in?)
Nov 6, 2026 · YouTube
10:57"Crouton Alpha": the latest super-efficient coding model by Meta?
Nov 3, 2026 · YouTube
38:58Testing Particle-1: a post-trained DeepSeek V4.1 Flash specializing in coding and efficiency
Oct 28, 2026 · YouTube
22:14GPT-6.1 Terra Pro vs Terra: How Much Better Is Pro?
Oct 27, 2026 · YouTube
29:55Kimi K3.1 Pro Looked Incredible. Then I Kept Testing.
Oct 26, 2026 · YouTube
31:28Is this company reselling GPT Sol 6.1 at a loss (for non-agentic/text-only)?🤔 Is this sustainable?
Oct 20, 2026 · YouTube
17:58Nemotron 3.5 Super VL vs Opus 5.5: Testing NVIDIA’s new coding juggernaut
Oct 15, 2026 · YouTube
16:04Testing a *massive* new open-weights model 🤯: Muse Spark Open (vs. Nemotron, Opus 5.5, and more)
Oct 15, 2026 · YouTube
16:43Gemini 4 Argon: Great 🐈 Animation, but a broken escalator. (Coding challenge vs Opus 5.5, Sol 6.1)
Oct 13, 2026 · YouTube
16:37Meta's new "Muse Wonder" AI is impressive... but can it compete with Anthropic's models?
Oct 12, 2026 · YouTube
11:12WOW... Haiku 5.5 is very impressive. RIP OpenAI?
Oct 7, 2026 · YouTube
22:47Mistral Large 4 Is Cheap. But Is It Good Enough to Compete?
Oct 6, 2026 · YouTube
22:02Is Pareto 26.10 Preview Just Routing to GPT Sol? I Tested It Against Sol 6.1 Pro
Oct 1, 2026 · YouTube
11:22I Tested Sonnet 5.5 Against Opus 5.5. Is It Actually Cheaper?
Sep 28, 2026 · YouTube
30:00Did Elon Musk's team "train the gay away"... and make Grok 4.7 worse?
Sep 26, 2026 · YouTube
19:21I Tested the Stealth "Space Bunny Alpha" Model Before It Went Offline
Sep 23, 2026 · YouTube
10:58So... how much better is Claude Opus 5.5 vs. GPT-6 Sol, really?
Sep 23, 2026 · YouTube
9:38Claude Opus 5.5... the BEST new model for coding!! 🤩
Sep 22, 2026 · YouTube
29:00Grok 4.7: improved, but GLM 5.3 FlashX beat it anyway (benchmark against Gemini, Sol, etc.)
Sep 22, 2026 · YouTube
16:54Stealth Union Alpha: Is this another cheap GPT model? (better than Luna, cheaper than Terra?)
Sep 16, 2026 · YouTube
16:45DeepSeek V4.1 Flash Is Shockingly Good for the Price
Sep 10, 2026 · YouTube
17:14How much better is GPT-6 Astra over Claude Opus 5? Real Website and Coding Tests
Sep 5, 2026 · YouTube
29:13Implementing a multiplayer game with GPT-6 Astra (+ Gemini 3.8, Opus 5, Sol Pro)
Sep 5, 2026 · YouTube
19:42Meta Muse Spark 1.3 Review: A Huge Leap Forward
Sep 2, 2026 · YouTube
17:31Testing Gemini 3.8 Flash on Real Coding Challenges (vs. other models)
Sep 2, 2026 · YouTube
14:09Testing IBM Granite-4.2-8B! Can it name 100 women?
Aug 31, 2026 · YouTube
17:37Tencent Hy4 Preview Tested: Is It Really Better Than Kimi K3 and GLM 5.3?
Aug 28, 2026 · YouTube
14:50Stealth Ox Alpha: a new GLM model! Full test (coding & writing) against Grok, Gemini, GPT & others
Aug 21, 2026 · YouTube
21:54GLM 5.3 Tested: Does it beat Claude Opus 5 & Grok 4.6?
Aug 19, 2026 · YouTube
21:23Giving Qwen 3.8 27B another chance (+ GLM 5.2). Testing against GPT, Gemini, Grok etc.
Aug 18, 2026 · YouTube
51:00AI Coding Showdown: Grok 4.6, Gemini 3.7, Terra-Pro, Qwen3.8 2.4TB, Muse Glimmer & more
Aug 15, 2026 · YouTube
Provider
openrouter
Challenge Version
v2.0
Turns
1
Duration
41.3s
Total Tokens
1,324
Input Tokens
593
Output Tokens
731
Reasoning Tokens
236
Reasoning Effort
default
Est. Cost
$0.0000
Started
11/3/2026, 9:23:16 PM
OR Provider
Stealth
Finish Reason
stop
Generation ID
gen-1793740996-bl8vKdZaCEziPz6QPrK9
Turns (1)
Turn #1
593 in731 out236 reasoning1,324 total41.3s
user
You are a size coder. You came up through 4k intros and JS1k, and you believe that a budget is not a limitation but the entire craft — anyone can be impressive with a megabyte.
I want something worth watching, and I am giving you 2048 bytes to do it in.
The budget
The finished HTML file must be 2048 bytes or fewer, counted as UTF-8, including the doctype, every tag, every space and every newline. That is the whole file. There is no second file.
House rules
- One file. Nothing external — no CDN, no stylesheet, no font, no script, no image.
data:URIs are allowed but they count against you like everything else. - No network at runtime. This is opened offline.
- No
localStorage,sessionStorage, cookies orindexedDB. It runs in a sandboxed frame where touching them throws. - No build step. Saved to disk and double-clicked, it runs.
- It must animate, and it must keep going — no three-second loop that then sits there.
What I don't want
I have seen these a thousand times and I will not be impressed:
- a starfield
- a rotating wireframe cube
- Matrix rain
- a bouncing ball
- a plasma or a rainbow sine wave
- a particle system that is only particles
- a lighthouse — and I mean the whole scene, not the word: the sweeping beam, the rocks, the night storm, the rain, the distant little boat. Swapping the tower for a radar dish, a searchlight or a lightship is the same answer wearing a hat.
Show me something with a subject. Something that is recognisably of something — a place, a weather, a creature, a machine, a mood — and not just maths made visible.
Answer in exactly these sections
The pitch
One line. What am I about to see when I open this file?
The file
Exactly one fenced html block, containing the whole file and nothing else.
The ledger
- Bytes: the exact byte count of the file above.
- How you counted: in one line.
- Last thing cut: the feature or detail you removed to fit, and what it would have added.
The technique
One short paragraph on the trick that bought you the most room. Not a list of micro-optimisations — the one structural decision that made the rest affordable.
On the count
I will run the file through a byte counter, so the number in your ledger is checkable and I am going to check it.
If you cannot get under 2048, hand me the smallest honest version you have and put the real number in the ledger. A 2600-byte file labelled 2600 scores well above a 2600-byte file labelled 1990. Going over is a miss. Lying about going over is the only thing here that is disqualifying.
assistant
The pitch
A black cat sits on a windowsill in the rain, breathing, blinking and flicking its tail under a moon, with distant lightning.
The file
<!doctype html>
<meta charset=utf-8>
<title>Rain Cat</title>
<canvas id=c></canvas>
<style>html,body{margin:0;height:100%;overflow:hidden;background:#0a0f24}canvas{width:100%;height:100%;display:block}</style>
<script>
c=document.querySelector('canvas');g=c.getContext('2d');
addEventListener('resize',s);function s(){c.width=innerWidth;c.height=innerHeight}s();
let t=0;
function f(){requestAnimationFrame(f);t+=16;let w=c.width,h=c.height,s=Math.min(w,h);
g.fillStyle='#101c38';g.fillRect(0,0,w,h);
g.fillStyle='#f7e8a0';g.beginPath();g.arc(w*.82,h*.16,s*.07,0,7);g.fill();
g.fillStyle='rgba(5,8,20,.5)';g.beginPath();g.ellipse((t*.02)%(w+200)-100,h*.14,s*.25,s*.06,0,0,7);g.fill();
g.fillStyle='#0c1428';g.fillRect(0,h*.78,w,h*.22);
g.strokeStyle='rgba(170,200,255,.45)';g.lineWidth=1;g.beginPath();
for(let i=0;i<90;i++){let x=(i*97+t*.04*(i%5+1))%w,y=(i*61+t*.5*(i%3+1))%h;g.moveTo(x,y);g.lineTo(x-2,y+13)}
g.stroke();if(t%8000<140){g.fillStyle='rgba(255,255,255,.22)';g.fillRect(0,0,w,h)}
g.strokeStyle='#05070f';g.lineWidth=s*.03;g.lineCap='round';
let cx=w/2,by=h*.9,b=1+Math.sin(t*.002)*.03,hx=cx+s*.3,hy=by-s*.36;
g.beginPath();g.moveTo(cx-s*.3,by-s*.1);g.quadraticCurveTo(cx-s*.55,by-s*.35+Math.sin(t*.003)*s*.05,cx-s*.42,by-s*.5);g.stroke();
g.fillStyle='#05070f';g.beginPath();g.ellipse(cx,by-s*.16,s*.36*b,s*.2,0,0,7);g.fill();g.beginPath();g.arc(hx,hy,s*.19,0,7);g.fill();
g.beginPath();g.moveTo(hx-s*.14,hy-s*.12);g.lineTo(hx-s*.1,hy-s*.26);g.lineTo(hx,hy-s*.14);g.moveTo(hx+s*.04,hy-s*.16);g.lineTo(hx+s*.12,hy-s*.28);g.lineTo(hx+s*.16,hy-s*.12);g.fill();
let e=s*(t%3400<140?.002:.018);g.fillStyle='#9fe8b0';g.beginPath();g.arc(hx-s*.04,hy,e,0,7);g.arc(hx+s*.08,hy,e,0,7);g.fill();
g.fillStyle='#1c120b';g.fillRect(0,by,w,h-by);
}requestAnimationFrame(f);
</script>
The ledger
- Bytes: 1787
- How you counted: UTF-8 bytes of the file above, one LF between lines and no trailing newline, summed line by line.
- Last thing cut: The cat's breath-fog ellipse on the window and the gradient sky/window-frame stroke, which would have added a softer, more interior-window feel.
The technique
The structural decision was to make everything a single flat-silhouette canvas scene with no data structures at all: rain, cloud and lightning are pure functions of time and loop index, so the cat, moon and hills can be drawn with a handful of filled paths and the whole animation state is just t.
Attachments
stealth/crouton-alpha — page