GPT-6.1 Terra vs GPT-6 Luna
GPT-6.1 Terra took 5 min 29 s and $0.15 at list price, GPT-6 Luna took 4 min 43 s and $0.017 at list price. GPT-6.1 Terra took 1.2× as long and cost 8.8× as much.
GPT-6.1 Terra
OpenAI · $5.00/M out · 706 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 is a three-person studio in Rotterdam, dedicated to repairing vintage synthesizers and keeping them in use.
Old instruments have a way of becoming familiar: the feel of a key, the response of a filter, the particular sound a circuit makes when it’s working as it should. When something goes wrong, we take the time to understand both the fault and the instrument around it. We work carefully, preserving original parts wherever practical and making repairs with the long term in mind.
Our studio brings together a shared interest in electronics, sound and the machines that connect them. Whether a synthesizer has a stubborn key, a noisy output or has been silent for years, we’re interested in finding a way forward.
We work with musicians, collectors and anyone who wants to hear an old instrument come to life again. If you have a synth that needs attention, we’d be glad to hear about 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
| GPT-6.1 Terra | GPT-6 Luna | |
|---|---|---|
| Maker | OpenAI | OpenAI |
| Made in | US | US |
| Released | 26 Oct 2026 | 22 Sep 2026 |
| Price in, per M tokens | $1.00 | $0.10 |
| Price out, per M tokens | $5.00 | $0.50 |
| Context | 1,050,000 tokens | 1,050,000 tokens |
| Weights | closed | closed |
| Hacker News points | 706 | 24 |
| Time for the six prompts | 5 min 29 s | 4 min 43 s |
| List price of the six prompts | $0.15 | $0.017 |
GPT-6 Luna was cheaper: $0.13 less at list price, and less on each of the 6 prompts. GPT-6 Luna was faster: 46 s less in total, and faster on 2 of the 6 prompts.
In the recording, both Breakout games play.
Rebuild this screen experiment: GPT-6.1 Terra's rebuild matched the screenshot at 95%; GPT-6 Luna was not in it. Tea Garden experiment: GPT-6.1 Terra's game passed 5 of 5 checks; GPT-6 Luna was not in it.