Gemini 4 Hydrogen vs GLM 5.3 Prime
Gemini 4 Hydrogen took 8 min 39 s and $0.60 at list price, GLM 5.3 Prime took 55 min 49 s and $3.43 at list price. GLM 5.3 Prime took 6.4× as long and cost 5.7× as much.
Gemini 4 Hydrogen
Google · $7.50/M out · 1,110 HN pts
GLM 5.3 Prime
Z.ai · $8.80/M out
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.
Some of the machines we work on were built before any of us were born. Patchbay is a three-person repair studio in Rotterdam, and what we do is simple to describe: we keep vintage synthesizers playing. A Minimoog that sat in an attic for thirty years. A Juno-60 with keys that no longer speak. A modular system that hums where it should roar. Whatever comes through our door gets opened up, traced through, and brought back.
That means rebuilding power supplies, cleaning a thousand key contacts, chasing a fault across three boards until it turns out to be a single cracked solder joint. It means calibrating oscillators that have drifted for decades, and listening — really listening — until a filter sounds the way it did the day it left the factory.
We do this because these instruments still sound like nothing else, and because somewhere a player is waiting to hear one come back to life.
Specs and numbers
| Gemini 4 Hydrogen | GLM 5.3 Prime | |
|---|---|---|
| Maker | Z.ai | |
| Made in | US | China |
| Released | 12 Nov 2026 | 23 Sep 2026 |
| Price in, per M tokens | $1.50 | $2.80 |
| Price out, per M tokens | $7.50 | $8.80 |
| Context | 1,048,576 tokens | 1,000,000 tokens |
| Weights | closed | closed |
| Hacker News points | 1,110 | — |
| Time for the six prompts | 8 min 39 s | 55 min 49 s |
| List price of the six prompts | $0.60 | $3.43 |
Gemini 4 Hydrogen was cheaper: $2.82 less at list price, and less on 5 of the 6 prompts. Gemini 4 Hydrogen was faster: 47 min 10 s less in total, and faster on each of the 6 prompts.
In the recording, both Breakout games play. GLM 5.3 Prime's landing page was cut off at the output limit (131,072 tokens).





