Hy4 vs Gemini 3.8 Flash
Hy4 took 16 min 15 s and $0.15 at list price, Gemini 3.8 Flash took 8 min 33 s and $0.32 at list price. Hy4 took 1.9× as long, and Gemini 3.8 Flash cost 2.1× as much.
Hy4
Tencent · $1.25/M out · 404 HN pts
Gemini 3.8 Flash
Google · $4.13/M out · 1,293 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 repairing vintage synthesizers and the odd drum machine or piece of studio equipment. We look after instruments that have survived tours, basements, and years of silence in cupboards. Our task is not to make them new, but to make them dependable while keeping the character that made them worth saving.
Every repair starts with listening: to the fault, to the owner, and to the instrument itself. From there we diagnose carefully, solder cleanly, calibrate patiently, and replace parts only when necessary. Between us we bring electronics, restoration, design, and studio experience, which keeps the work practical, unhurried, and attentive to small details. We document what we find, source components with care, and explain the work in plain language. Some jobs take an afternoon; others become long conversations with forty-year-old circuits. In each case, the goal is simple: return the machine to the hands, recordings, and rooms where it belongs.
Tucked away in Rotterdam, Patchbay is a three-person repair studio dedicated to the preservation and revival of vintage synthesizers. We believe that classic instruments are living machines rather than museum relics—tools built to inspire, create, and be played loud. Between the three of us, we combine decades of experience in electronics engineering, sound design, and meticulous craftsmanship. Whether tracking down elusive voice chips for an eighties polyphonic giant, rebuilding power supplies, or recalibrating the drift on a cantankerous monophonic circuit from the seventies, we treat every piece of gear with obsessive attention to detail. Our workbench is built on a deep respect for historical engineering and a refusal to cut corners. For musicians, producers, and collectors across the Netherlands and beyond, Patchbay is where forgotten circuits find their current again, keeping the tactile soul of analog synthesis alive and resonant.
Specs and numbers
| Hy4 | Gemini 3.8 Flash | |
|---|---|---|
| Maker | Tencent | |
| Made in | China | US |
| Released | 4 Nov 2026 | 2 Sep 2026 |
| Price in, per M tokens | $0.417 | $0.825 |
| Price out, per M tokens | $1.25 | $4.13 |
| Context | 1,048,576 tokens | 1,048,576 tokens |
| Weights | open | closed |
| Hacker News points | 404 | 1,293 |
| Time for the six prompts | 16 min 15 s | 8 min 33 s |
| List price of the six prompts | $0.15 | $0.32 |
Hy4 was cheaper: $0.17 less at list price, and less on each of the 6 prompts. Gemini 3.8 Flash was faster: 7 min 42 s less in total, and faster on 5 of the 6 prompts.
In the recording, both Breakout games play.
Rebuild this screen experiment: Hy4's rebuild matched the screenshot at 79%; Gemini 3.8 Flash was not in it. Tea Garden experiment: Hy4's game passed 5 of 5 checks; Gemini 3.8 Flash was not in it.





