Gemini 4 Hydrogen vs GPT-6.1 Terra
Gemini 4 Hydrogen took 8 min 39 s and $0.60 at list price, GPT-6.1 Terra took 5 min 29 s and $0.15 at list price. Gemini 4 Hydrogen took 1.6× as long and cost 4.1× as much.
Gemini 4 Hydrogen
Google · $7.50/M out · 168 HN pts
GPT-6.1 Terra
OpenAI · $5.00/M out · 724 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.
In a quiet corner of Rotterdam, surrounded by the scent of warm solder and the hum of calibrated oscillators, Patchbay brings classic electronic instruments back to life. We are a three-person studio united by an obsession with vintage synthesizers and the belief that these machines belong under musicians' hands, not gathering dust in storage.
Every synthesizer that crosses our workbench carries decades of history, along with brittle capacitors, worn contacts, and drifting tuning. Whether we are facing a temperamental analog polysynth from the seventies or an early digital classic, we approach each repair with patience and precision. We do not believe in quick fixes. Instead, we study original schematics, source elusive components, and meticulously restore every circuit, keybed, and fader until the instrument plays as reliably as the day it was built. Patchbay exists to keep these irreplaceable voices singing for the next generation of artists.
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.
Specs and numbers
| Gemini 4 Hydrogen | GPT-6.1 Terra | |
|---|---|---|
| Maker | OpenAI | |
| Made in | US | US |
| Released | 12 Nov 2026 | 26 Oct 2026 |
| Price in, per M tokens | $1.50 | $1.00 |
| Price out, per M tokens | $7.50 | $5.00 |
| Context | 1,048,576 tokens | 1,050,000 tokens |
| Weights | closed | closed |
| Hacker News points | 168 | 724 |
| Time for the six prompts | 8 min 39 s | 5 min 29 s |
| List price of the six prompts | $0.60 | $0.15 |
GPT-6.1 Terra was cheaper: $0.46 less at list price, and less on each of the 6 prompts. GPT-6.1 Terra was faster: 3 min 11 s less in total, and faster on each 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%; Gemini 4 Hydrogen was not in it. Tea Garden experiment: GPT-6.1 Terra's game passed 5 of 5 checks; Gemini 4 Hydrogen was not in it.