Gemini 4 Hydrogen vs Kimi K3.1 Pro
Gemini 4 Hydrogen took 8 min 39 s and $0.60 at list price, Kimi K3.1 Pro took 32 min 17 s and $1.11 at list price. Kimi K3.1 Pro took 3.7× as long and cost 1.8× as much.
Gemini 4 Hydrogen
Google · $7.50/M out · 168 HN pts
Kimi K3.1 Pro
Moonshot AI · $8.79/M out · 1,821 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 three-person studio in Rotterdam devoted to keeping vintage synthesizers alive, playable, and full of character. We work on instruments that have spent decades in studios, bedrooms, and tour cases, and we believe each one deserves more than a quick fix. From drifting oscillators and noisy sliders to tired keybeds and mysterious faults, we take the time to listen, diagnose, and repair with care.
Our approach combines patient troubleshooting, period-correct components where possible, and a deep respect for the original sound. We do not believe in erasing an instrument’s history; we preserve the quirks that make it worth loving. Whether your synthesizer needs a full overhaul or a little help getting back on stage, you will always know who is working on it and why. Patchbay exists for the joy of switching on an old machine and hearing it come back to life.
Specs and numbers
| Gemini 4 Hydrogen | Kimi K3.1 Pro | |
|---|---|---|
| Maker | Moonshot AI | |
| Made in | US | China |
| Released | 12 Nov 2026 | 23 Oct 2026 |
| Price in, per M tokens | $1.50 | $0.237 |
| Price out, per M tokens | $7.50 | $8.79 |
| Context | 1,048,576 tokens | 1,048,576 tokens |
| Weights | closed | open |
| Hacker News points | 168 | 1,821 |
| Time for the six prompts | 8 min 39 s | 32 min 17 s |
| List price of the six prompts | $0.60 | $1.11 |
Gemini 4 Hydrogen was cheaper: $0.51 less at list price, and less on 5 of the 6 prompts. Gemini 4 Hydrogen was faster: 23 min 38 s less in total, and faster on each of the 6 prompts.
In the recording, both Breakout games play.
Rebuild this screen experiment: Kimi K3.1 Pro's rebuild matched the screenshot at 87%; Gemini 4 Hydrogen was not in it. Tea Garden experiment: Kimi K3.1 Pro's game passed 5 of 5 checks; Gemini 4 Hydrogen was not in it.