Flint vs GPT-6 Luna
Flint took 10 min 5 s and was free at list price, GPT-6 Luna took 4 min 43 s and $0.017 at list price. Flint took 2.1× as long.
Flint
Recursive · free route · 36 HN pts
GPT-6 Luna
OpenAI · $0.50/M out · 24 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 began in a small, cluttered workshop in Rotterdam, where solder smoke and old capacitors seem to belong together. We are a three-person studio, which means every synthesizer that comes through our door is handled by one of the same people who started the project. No call center, no hand-off to strangers. We repair vintage synthesizers: the dusty analog beasts, the rare oddities, the ones with missing knobs and mysterious tuning drift. Our work is part electronics, part archaeology, part stubborn love. We listen to the hum before we open the case, and we believe most vintage synths are not dead, just waiting for someone to pay attention. In a city known for moving quickly, we prefer taking our time. Patchbay exists to keep old voices alive, one oscillator, filter, and power supply at a time. If you have a synth that sings, whispers, or hums through the decades, we would be glad to meet it.
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.
Specs and numbers
| Flint | GPT-6 Luna | |
|---|---|---|
| Maker | Recursive | OpenAI |
| Made in | US | US |
| Released | 21 Oct 2026 | 22 Sep 2026 |
| Price in, per M tokens | free route (list $0/M) | $0.10 |
| Price out, per M tokens | free route (list $0/M) | $0.50 |
| Context | 262,144 tokens | 1,050,000 tokens |
| Weights | open | closed |
| Hacker News points | 36 | 24 |
| Time for the six prompts | 10 min 5 s | 4 min 43 s |
| List price of the six prompts | free | $0.017 |
Flint was free at list price; GPT-6 Luna cost $0.017. GPT-6 Luna was faster: 5 min 22 s less in total, and faster on each of the 6 prompts.
In the recording, Flint's Breakout game loads but doesn't start; GPT-6 Luna's plays.
Tea Garden experiment: Flint's game passed 5 of 5 checks; GPT-6 Luna was not in it.





