Xing 4.0 vs GPT-6.1 Sol
Xing 4.0 took 25 min 32 s and was free at list price, GPT-6.1 Sol took 11 min 25 s and $0.35 at list price. Xing 4.0 took 2.2× as long.
Xing 4.0
XingChen · free route
GPT-6.1 Sol
OpenAI · $10.00/M out · 1,166 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.
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 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, keeping vintage synthesizers in working hands. We repair the instruments that have picked up a crackle, lost a voice, drifted out of tune, or stopped making sound altogether.
We like the patient side of repair: tracing a fault, understanding an old circuit, and finding the right fix rather than the quickest workaround. Our aim is to make each instrument dependable without sanding away the character that made someone fall for it in the first place.
Some synths arrive with a clear problem. Others come with a story and a noise that only happens after twenty minutes. Either way, the work starts with listening—to the instrument and to the person who plays it.
We’re a small studio by choice. It keeps us close to the work, and to the musicians who trust us with something they want to keep making music with.
Specs and numbers
| Xing 4.0 | GPT-6.1 Sol | |
|---|---|---|
| Maker | XingChen | OpenAI |
| Made in | China | US |
| Released | 16 Oct 2026 | 29 Sep 2026 |
| Price in, per M tokens | free route (list $0/M) | $2.00 |
| Price out, per M tokens | free route (list $0/M) | $10.00 |
| Context | 262,144 tokens | 1,050,000 tokens |
| Weights | open | closed |
| Hacker News points | — | 1,166 |
| Time for the five prompts | 25 min 32 s | 11 min 25 s |
| List price of the five prompts | free | $0.35 |
Xing 4.0 was free at list price; GPT-6.1 Sol cost $0.35. GPT-6.1 Sol was faster: 14 min 7 s less in total, and faster on 4 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: GPT-6.1 Sol's rebuild matched the screenshot at 97%; Xing 4.0 was not in it. Tea Garden experiment: GPT-6.1 Sol's game passed 5 of 5 checks; Xing 4.0 was not in it.