Kimi K3.1 Pro vs Grok 4.7
Kimi K3.1 Pro took 32 min 17 s and $1.27 at list price, Grok 4.7 took 18 min 1 s and $0.63 at list price. Kimi K3.1 Pro took 1.8× as long and cost 2.0× as much.
Kimi K3.1 Pro
Moonshot AI · $10.00/M out · 1,168 HN pts
Grok 4.7
xAI · $6.00/M out · 629 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 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.
Patchbay is a three-person studio in Rotterdam devoted to the repair of vintage synthesizers. We work on instruments that have already lived a long life on stages, in studios, and in spare rooms, and we treat each one as something worth keeping rather than replacing. Our benches are set up for careful diagnosis, component-level repair, and the slow work of bringing an old circuit back into reliable use.
The three of us share the shop, the tools, and the jobs. One person may trace a failing voice while another sources a part or recalibrates an oscillator; we pass instruments between us until the sound is right and the hardware is stable. Clients come to us with analog polys, early digital machines, drum boxes, and the odd modular that has been patched and repatched for decades. We listen first, then open the case.
We are not a museum and we are not a showroom. Patchbay exists so that working musicians, collectors, and curious owners in Rotterdam and beyond can keep playing the instruments they already love.
Specs and numbers
| Kimi K3.1 Pro | Grok 4.7 | |
|---|---|---|
| Maker | Moonshot AI | xAI |
| Made in | China | US |
| Released | 23 Oct 2026 | 21 Sep 2026 |
| Price in, per M tokens | $2.00 | $2.00 |
| Price out, per M tokens | $10.00 | $6.00 |
| Context | 1,048,576 tokens | 500,000 tokens |
| Weights | closed | closed |
| Hacker News points | 1,168 | 629 |
| Time for the six prompts | 32 min 17 s | 18 min 1 s |
| List price of the six prompts | $1.27 | $0.63 |
Grok 4.7 was cheaper: $0.64 less at list price, and less on each of the 6 prompts. Grok 4.7 was faster: 14 min 16 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%, Grok 4.7's 59%. Tea Garden experiment: Kimi K3.1 Pro's game passed 5 of 5 checks, Grok 4.7's 5 of 5.