Xing 4.0 vs GLM 5.3 Flash
Xing 4.0 took 25 min 32 s and was free at list price, GLM 5.3 Flash took 56 min 30 s and $0.036 at list price. GLM 5.3 Flash took 2.2× as long.
Xing 4.0
XingChen · free route
GLM 5.3 Flash
Z.ai · $0.148/M out · 1,329 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 began the way most repair shops do: with a broken synth, a stubborn owner, and a soldering iron that refused to stay idle. We're three people—Joris, Marit, and Tomas—working out of a small workshop on the back streets of Rotterdam-Noord, surrounded by oscilloscopes, spare parts, and instruments that sometimes arrive in worse condition than their owners admit.
Between us, we've spent decades repairing and restoring vintage synthesizers: Rolands, Moogs, Korgs, Yamahas, and machines whose manuals were never written in the first place. We don't sell anything. We fix things. That focus keeps us honest and keeps the work slow, careful, and done properly.
We believe old instruments deserve to keep making music, not gather dust in attics or fetch prices only collectors can pay. Whether it's a cracked keybed, a dying power supply, or a voice that's gone quiet, we'd like to help bring it back.
Specs and numbers
| Xing 4.0 | GLM 5.3 Flash | |
|---|---|---|
| Maker | XingChen | Z.ai |
| Made in | China | China |
| Released | 16 Oct 2026 | 26 Aug 2026 |
| Price in, per M tokens | free route (list $0/M) | $0.016 |
| Price out, per M tokens | free route (list $0/M) | $0.148 |
| Context | 262,144 tokens | 1,048,576 tokens |
| Weights | open | open |
| Hacker News points | — | 1,329 |
| Time for the five prompts | 25 min 32 s | 56 min 30 s |
| List price of the five prompts | free | $0.036 |
Xing 4.0 was free at list price; GLM 5.3 Flash cost $0.036. Xing 4.0 was faster: 30 min 58 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).





