GPT-6.1 Terra vs Xing 4.0
GPT-6.1 Terra took 5 min 3 s and $0.14 at list price, Xing 4.0 took 25 min 32 s and was free at list price. Xing 4.0 took 5.0× as long.
GPT-6.1 Terra
OpenAI · $5.00/M out · 706 HN pts
Xing 4.0
XingChen · free route
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.
Blank first frame. Press Run.
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.
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 compact, three-person workshop rooted in the dynamic streets of Rotterdam, born from a shared reverence for analog sound. Our team shares an unwavering dedication to vintage synthesizers, viewing each oscillator, filter, and routing cable as a vital piece of sonic history waiting to be restored. Whether diagnosing a failing voltage regulator or carefully retrofitting obsolete components, we take immense pride in bringing classic instruments back to their full potential. In our studio, repairing isn't just a technical service—it is a shared passion among friends who believe the past deserves to keep playing. We meticulously diagnose and revive legacy synths, ensuring the iconic sounds of yesterday continue shaping today’s electronic music. Bring us your dented, broken machines, and let us help you reconnect them with the rich, unmistakable sounds they were always meant to make. Every patch, every knob, every fleeting tone depends on the work we do here.
Specs and numbers
| GPT-6.1 Terra | Xing 4.0 | |
|---|---|---|
| Maker | OpenAI | XingChen |
| Made in | US | China |
| Released | 26 Oct 2026 | 16 Oct 2026 |
| Price in, per M tokens | $1.00 | free route (list $0/M) |
| Price out, per M tokens | $5.00 | free route (list $0/M) |
| Context | 1,050,000 tokens | 262,144 tokens |
| Weights | closed | open |
| Hacker News points | 706 | — |
| Time for the five prompts | 5 min 3 s | 25 min 32 s |
| List price of the five prompts | $0.14 | free |
Xing 4.0 was free at list price; GPT-6.1 Terra cost $0.14. GPT-6.1 Terra was faster: 20 min 29 s less in total, and faster on each of the 5 prompts.
In the recording, both Breakout games play. Xing 4.0's landing page showed a blank first frame when the still was taken. Xing 4.0 has no logo: doesn’t draw (an SVG file without the SVG namespace, which browsers draw as an empty box).
Rebuild this screen experiment: GPT-6.1 Terra's rebuild matched the screenshot at 95%; Xing 4.0 was not in it. Tea Garden experiment: GPT-6.1 Terra's game passed 5 of 5 checks; Xing 4.0 was not in it.