Xing 4.0 vs Claude Sonnet 5.5
Xing 4.0 took 25 min 32 s and was free at list price, Claude Sonnet 5.5 took 3 min 32 s and $0.32 at list price. Xing 4.0 took 7.2× as long.
Xing 4.0
XingChen · free route
Claude Sonnet 5.5
Anthropic · $10.00/M out · 9 HN pts
Only Claude Sonnet 5.5 has CLI runs here (Claude Code).
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 three people in a workshop in Rotterdam, trying to keep old synthesizers alive. We repair, restore and recalibrate the instruments that shaped electronic music: Moogs and Oberheims, Rolands and Sequential Circuits, the odd temperamental Soviet oddity that someone found in an attic.
Most of what lands on our benches has been silent for years. A crackling pot, a drifting oscillator, a power supply that gave up in 1994. Some come from working musicians who need their instrument back before the next tour. Others come from people who inherited a dusty box from a parent and want to hear what it sounds like.
We work slowly and by hand. We trace faults with a scope and a schematic, source or rebuild parts when originals are gone, and change as little as we can. Every synth leaves with a note describing exactly what we did, so the next person to open it knows where we have been.
Come by, bring your synth, and stay for coffee.
Specs and numbers
| Xing 4.0 | Claude Sonnet 5.5 | |
|---|---|---|
| Maker | XingChen | Anthropic |
| Made in | China | US |
| Released | 16 Oct 2026 | 28 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 | 1,000,000 tokens |
| Weights | open | closed |
| Hacker News points | — | 9 |
| Time for the five prompts | 25 min 32 s | 3 min 32 s |
| List price of the five prompts | free | $0.32 |
Xing 4.0 was free at list price; Claude Sonnet 5.5 cost $0.32. Claude Sonnet 5.5 was faster: 22 min 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).
Rebuild this screen experiment: Claude Sonnet 5.5's rebuild matched the screenshot at 94%; Xing 4.0 was not in it. Tea Garden experiment: Claude Sonnet 5.5's game passed 5 of 5 checks; Xing 4.0 was not in it.