GLM 5.3 FlashX Legal vs GLM 5.3 Flash
GLM 5.3 FlashX Legal took 45 min 14 s and $0.42 at list price, GLM 5.3 Flash took 59 min 10 s and $0.023 at list price. GLM 5.3 Flash took 1.3× as long, and GLM 5.3 FlashX Legal cost 18× as much.
GLM 5.3 FlashX Legal
Z.ai · $1.25/M out
GLM 5.3 Flash
Z.ai · $0.092/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.
Logo
Design a logo for Night Heron, an independent bookshop that only opens after dark.
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 the repair and restoration of vintage synthesizers. We work on the machines that shaped the sound of the last fifty years — Roland, Moog, Yamaha, Korg, EMS, and the rest — from the rare and legendary to the well-loved and well-worn.
We started the studio because these instruments matter. They were built to be repaired, with discrete components, schematics, and construction that reward patience and care. Somewhere along the way, that way of making things fell out of fashion. We think it's worth keeping alive.
Every synthesizer that comes through our door is treated the same way: carefully diagnosed, honestly assessed, and repaired with respect for its original character. No unnecessary modifications, no shortcuts that compromise the instrument. Whether it's a failed voice chip, a dead key, or years of dust and neglect, our job is to put the machine back in the hands of the people who play it.
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
| GLM 5.3 FlashX Legal | GLM 5.3 Flash | |
|---|---|---|
| Maker | Z.ai | Z.ai |
| Made in | China | China |
| Released | 2 Nov 2026 | 26 Aug 2026 |
| Price in, per M tokens | $0.37 | $0.029 |
| Price out, per M tokens | $1.25 | $0.092 |
| Context | 1,048,576 tokens | 1,048,576 tokens |
| Weights | closed | open |
| Hacker News points | — | 1,329 |
| Time for the six prompts | 45 min 14 s | 59 min 10 s |
| List price of the six prompts | $0.42 | $0.023 |
GLM 5.3 Flash was cheaper: $0.39 less at list price, and less on each of the 6 prompts. GLM 5.3 FlashX Legal was faster: 13 min 56 s less in total, and faster on 4 of the 6 prompts.
In the recording, both Breakout games play.





