Gemini 4 Carbon vs Kimi K3.1 Pro
Gemini 4 Carbon took 18 min 40 s and $1.05 at list price, Kimi K3.1 Pro took 32 min 17 s and $1.27 at list price. Kimi K3.1 Pro took 1.7× as long and cost 1.2× as much.
Gemini 4 Carbon
Google · $10.00/M out · 308 HN pts
Kimi K3.1 Pro
Moonshot AI · $10.00/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.
Tucked away in a bright workshop near the Rotterdam docks, Patchbay is a three-person studio dedicated to keeping electronic music history alive. We repair, restore, and calibrate vintage synthesizers, drum machines, and outboard gear. Whether it is a temperamental Juno with failing voice chips, a road-worn Minimoog drifting out of tune, or an obscure polysynth needing a complete overhaul, our benches are built for machines that make noise.
Between the three of us, we combine decades of experience in electronics, sound design, and obsessive troubleshooting. We do not view classic synthesizers as fragile museum pieces meant to sit behind glass; they are working instruments built to be played, patched, and pushed to their limits. Armed with original schematics, precision test gear, and a deep respect for analog circuitry, we bring tired hardware back from the brink—ready for another forty years in the studio or on stage.
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 Carbon | Kimi K3.1 Pro | |
|---|---|---|
| Maker | Moonshot AI | |
| Made in | US | China |
| Released | 10 Nov 2026 | 23 Oct 2026 |
| Price in, per M tokens | $2.00 | $2.00 |
| Price out, per M tokens | $10.00 | $10.00 |
| Context | 1,048,576 tokens | 1,048,576 tokens |
| Weights | closed | open |
| Hacker News points | 308 | 1,821 |
| Time for the six prompts | 18 min 40 s | 32 min 17 s |
| List price of the six prompts | $1.05 | $1.27 |
Gemini 4 Carbon was cheaper: $0.21 less at list price, and less on 4 of the 6 prompts. Gemini 4 Carbon was faster: 13 min 37 s less in total, and faster on 4 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 Carbon was not in it. Tea Garden experiment: Kimi K3.1 Pro's game passed 5 of 5 checks; Gemini 4 Carbon was not in it.