GPT-6 Luna vs Kimi K3
GPT-6 Luna took 4 min 43 s and $0.017 at list price, Kimi K3 took 22 min 52 s and $1.92 at list price. Kimi K3 took 4.9× as long and cost 114× as much.
GPT-6 Luna
OpenAI · $0.50/M out · 24 HN pts
Kimi K3
Moonshot AI · $15.00/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.
Patchbay is a three-person studio in Rotterdam devoted to repairing vintage synthesizers. We work with instruments that have been played, carried, opened up, and passed from one owner to the next. Each arrives with its own history and its own set of quirks, so we begin by listening carefully and tracing the problem before reaching for a fix.
Our work ranges from straightforward maintenance to deeper electronic repairs. We clean, test, diagnose, and restore with the aim of making a synthesizer reliable again while respecting the design that gives it its voice. When a repair calls for a replacement part, we look for a solution that fits the instrument rather than treating it as disposable.
Patchbay is run by three people who share a curiosity about how these machines work and a respect for the sounds they make. We believe a well-cared-for synthesizer has plenty more music in it, and we’re here to help it find its way back into someone’s hands.
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
| GPT-6 Luna | Kimi K3 | |
|---|---|---|
| Maker | OpenAI | Moonshot AI |
| Made in | US | China |
| Released | 22 Sep 2026 | 16 Jul 2026 |
| Price in, per M tokens | $0.10 | $0.192 |
| Price out, per M tokens | $0.50 | $15.00 |
| Context | 1,050,000 tokens | 1,048,576 tokens |
| Weights | closed | open |
| Hacker News points | 24 | 9,870 |
| Time for the six prompts | 4 min 43 s | 22 min 52 s |
| List price of the six prompts | $0.017 | $1.92 |
GPT-6 Luna was cheaper: $1.90 less at list price, and less on each of the 6 prompts. GPT-6 Luna was faster: 18 min 9 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's rebuild matched the screenshot at 68%; GPT-6 Luna was not in it. Tea Garden experiment: Kimi K3's game passed 5 of 5 checks; GPT-6 Luna was not in it.