Gemini 4 Hydrogen vs GLM 5.3 Flash
Gemini 4 Hydrogen took 8 min 39 s and $0.60 at list price, GLM 5.3 Flash took 59 min 10 s and $0.020 at list price. GLM 5.3 Flash took 6.8× as long, and Gemini 4 Hydrogen cost 30× as much.
Gemini 4 Hydrogen
Google · $7.50/M out · 168 HN pts
GLM 5.3 Flash
Z.ai · $0.078/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.
In a quiet corner of Rotterdam, surrounded by the scent of warm solder and the hum of calibrated oscillators, Patchbay brings classic electronic instruments back to life. We are a three-person studio united by an obsession with vintage synthesizers and the belief that these machines belong under musicians' hands, not gathering dust in storage.
Every synthesizer that crosses our workbench carries decades of history, along with brittle capacitors, worn contacts, and drifting tuning. Whether we are facing a temperamental analog polysynth from the seventies or an early digital classic, we approach each repair with patience and precision. We do not believe in quick fixes. Instead, we study original schematics, source elusive components, and meticulously restore every circuit, keybed, and fader until the instrument plays as reliably as the day it was built. Patchbay exists to keep these irreplaceable voices singing for the next generation of artists.
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
| Gemini 4 Hydrogen | GLM 5.3 Flash | |
|---|---|---|
| Maker | Z.ai | |
| Made in | US | China |
| Released | 12 Nov 2026 | 26 Aug 2026 |
| Price in, per M tokens | $1.50 | $0.04 |
| Price out, per M tokens | $7.50 | $0.078 |
| Context | 1,048,576 tokens | 1,048,576 tokens |
| Weights | closed | open |
| Hacker News points | 168 | 1,329 |
| Time for the six prompts | 8 min 39 s | 59 min 10 s |
| List price of the six prompts | $0.60 | $0.020 |
GLM 5.3 Flash was cheaper: $0.58 less at list price, and less on each of the 6 prompts. Gemini 4 Hydrogen was faster: 50 min 30 s less in total, and faster on 5 of the 6 prompts.
In the recording, both Breakout games play.





