Kimi K3.1 Pro vs Xing 4.0
Kimi K3.1 Pro took 29 min 16 s and $1.14 at list price, Xing 4.0 took 25 min 32 s and was free at list price. Kimi K3.1 Pro took 1.1× as long.
Kimi K3.1 Pro
Moonshot AI · $10.00/M out · 1,168 HN pts
Xing 4.0
XingChen · free route
Pelican
Generate an SVG of a pelican riding a bicycle
Watch
Draw a mechanical wristwatch that shows the current local time, with a sweeping seconds hand and a date window. Make it look expensive.
Landing
Build the landing page for Lumen Cycles, a Copenhagen workshop that builds custom cargo bikes to order. Make it look like a real brand you would trust with 4,000 euros.
Blank first frame. Press Run.
Breakout
Make a Breakout game I can play right now with the keyboard or the mouse. Give it several levels, a score and some juice.
About
Write the opening of the About us page for Patchbay, a three-person studio in Rotterdam that repairs vintage synthesizers. About 150 words.
Patchbay is a three-person studio in Rotterdam devoted to keeping vintage synthesizers alive, playable, and full of character. We work on instruments that have spent decades in studios, bedrooms, and tour cases, and we believe each one deserves more than a quick fix. From drifting oscillators and noisy sliders to tired keybeds and mysterious faults, we take the time to listen, diagnose, and repair with care.
Our approach combines patient troubleshooting, period-correct components where possible, and a deep respect for the original sound. We do not believe in erasing an instrument’s history; we preserve the quirks that make it worth loving. Whether your synthesizer needs a full overhaul or a little help getting back on stage, you will always know who is working on it and why. Patchbay exists for the joy of switching on an old machine and hearing it come back to life.
Patchbay is a compact, three-person workshop rooted in the dynamic streets of Rotterdam, born from a shared reverence for analog sound. Our team shares an unwavering dedication to vintage synthesizers, viewing each oscillator, filter, and routing cable as a vital piece of sonic history waiting to be restored. Whether diagnosing a failing voltage regulator or carefully retrofitting obsolete components, we take immense pride in bringing classic instruments back to their full potential. In our studio, repairing isn't just a technical service—it is a shared passion among friends who believe the past deserves to keep playing. We meticulously diagnose and revive legacy synths, ensuring the iconic sounds of yesterday continue shaping today’s electronic music. Bring us your dented, broken machines, and let us help you reconnect them with the rich, unmistakable sounds they were always meant to make. Every patch, every knob, every fleeting tone depends on the work we do here.
Specs and numbers
| Kimi K3.1 Pro | Xing 4.0 | |
|---|---|---|
| Maker | Moonshot AI | XingChen |
| Made in | China | China |
| Released | 23 Oct 2026 | 16 Oct 2026 |
| Price in, per M tokens | $2.00 | free route (list $0/M) |
| Price out, per M tokens | $10.00 | free route (list $0/M) |
| Context | 1,048,576 tokens | 262,144 tokens |
| Weights | closed | open |
| Hacker News points | 1,168 | — |
| Time for the five prompts | 29 min 16 s | 25 min 32 s |
| List price of the five prompts | $1.14 | free |
Xing 4.0 was free at list price; Kimi K3.1 Pro cost $1.14. Xing 4.0 was faster: 3 min 44 s less in total, and faster on 3 of the 5 prompts.
In the recording, both Breakout games play. Xing 4.0's landing page showed a blank first frame when the still was taken. Xing 4.0 has no logo: doesn’t draw (an SVG file without the SVG namespace, which browsers draw as an empty box).
Rebuild this screen experiment: Kimi K3.1 Pro's rebuild matched the screenshot at 87%; Xing 4.0 was not in it. Tea Garden experiment: Kimi K3.1 Pro's game passed 5 of 5 checks; Xing 4.0 was not in it.