Gemini 4 Hydrogen vs Kimi K3
Gemini 4 Hydrogen took 8 min 39 s and $0.60 at list price, Kimi K3 took 22 min 52 s and $2.05 at list price. Kimi K3 took 2.6× as long and cost 3.4× as much.
Gemini 4 Hydrogen
Google · $7.50/M out · 168 HN pts
Kimi K3
Moonshot AI · $16.00/M out · 9,870 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 is a small workshop in Rotterdam where old synthesizers come back to life. We are three people — a former recording engineer, a self-taught circuit obsessive, and a classically trained pianist who fell in love with broken machines — and between us we have spent decades coaxing sound out of equipment the rest of the world gave up on.
We started Patchbay because we kept meeting the same problem: beloved instruments sitting silent in attics and studio corners, written off as unfixable. A Juno with a dead voice chip. A Prophet that drifts out of tune. A Moog that hums when it shouldn't. To us, none of these are lost causes. They are instruments with history in them, and they deserve careful hands, original parts where possible, and honest work.
Every synth that leaves our bench is played, tested, and listened to — because that is what it was made for.
Specs and numbers
| Gemini 4 Hydrogen | Kimi K3 | |
|---|---|---|
| Maker | Moonshot AI | |
| Made in | US | China |
| Released | 12 Nov 2026 | 16 Jul 2026 |
| Price in, per M tokens | $1.50 | $0.192 |
| Price out, per M tokens | $7.50 | $16.00 |
| Context | 1,048,576 tokens | 1,048,576 tokens |
| Weights | closed | open |
| Hacker News points | 168 | 9,870 |
| Time for the six prompts | 8 min 39 s | 22 min 52 s |
| List price of the six prompts | $0.60 | $2.05 |
Gemini 4 Hydrogen was cheaper: $1.44 less at list price, and less on 5 of the 6 prompts. Gemini 4 Hydrogen was faster: 14 min 13 s less in total, and faster on 5 of the 6 prompts.
In the recording, both Breakout games play.
Rebuild this screen experiment: Kimi K3's rebuild matched the screenshot at 68%; Gemini 4 Hydrogen was not in it. Tea Garden experiment: Kimi K3's game passed 5 of 5 checks; Gemini 4 Hydrogen was not in it.





