Xing 4.0 vs GPT-6 Luna
Xing 4.0 took 25 min 32 s and was free at list price, GPT-6 Luna took 4 min 14 s and $0.015 at list price. Xing 4.0 took 6.0× as long.
Xing 4.0
XingChen · free route
GPT-6 Luna
OpenAI · $0.50/M out · 24 HN pts
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.
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 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.
Patchbay is a three-person studio in Rotterdam devoted to repairing vintage synthesizers. We work with instruments that have been played, carried, opened up, and passed from one owner to the next. Each arrives with its own history and its own set of quirks, so we begin by listening carefully and tracing the problem before reaching for a fix.
Our work ranges from straightforward maintenance to deeper electronic repairs. We clean, test, diagnose, and restore with the aim of making a synthesizer reliable again while respecting the design that gives it its voice. When a repair calls for a replacement part, we look for a solution that fits the instrument rather than treating it as disposable.
Patchbay is run by three people who share a curiosity about how these machines work and a respect for the sounds they make. We believe a well-cared-for synthesizer has plenty more music in it, and we’re here to help it find its way back into someone’s hands.
Specs and numbers
| Xing 4.0 | GPT-6 Luna | |
|---|---|---|
| Maker | XingChen | OpenAI |
| Made in | China | US |
| Released | 16 Oct 2026 | 22 Sep 2026 |
| Price in, per M tokens | free route (list $0/M) | $0.10 |
| Price out, per M tokens | free route (list $0/M) | $0.50 |
| Context | 262,144 tokens | 1,050,000 tokens |
| Weights | open | closed |
| Hacker News points | — | 24 |
| Time for the five prompts | 25 min 32 s | 4 min 14 s |
| List price of the five prompts | free | $0.015 |
Xing 4.0 was free at list price; GPT-6 Luna cost $0.015. GPT-6 Luna was faster: 21 min 19 s less in total, and faster on each 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).





