GPT-6.1 Terra Pro vs Ember-1
GPT-6.1 Terra Pro took 6 min 58 s and $0.39 at list price, Ember-1 took 25 min 56 s and $1.78 at list price. Ember-1 took 3.7× as long and cost 4.6× as much.
GPT-6.1 Terra Pro
OpenAI · $5.00/M out
Ember-1
Fireworks · $15.00/M out · 589 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. We work on the instruments that have shaped decades of music, from well-loved studio staples to curious machines that have spent years in storage.
Old synthesizers develop problems in their own ways. A key stops responding, a filter drifts, a power supply gives out. We take the time to trace the fault, understand the instrument and make a repair that respects how it was built. Wherever possible, we preserve original components; when a part needs replacing, we choose with care.
We know these instruments are more than collections of circuits. They carry sounds, habits and memories, and each one has a story before it reaches our bench. Whether you rely on yours every day or are hoping to hear it again after a long silence, our aim is to help you get back to making music.
Patchbay is a three-person workshop in Rotterdam dedicated to keeping vintage synthesizers alive. We work on the machines that shaped electronic music — analog polysynths, temperamental drum machines, early digital oddities — replacing tired capacitors, rebuilding keybeds, and coaxing silent oscillators back into tune.
Between us we bring decades of experience in electronics, instrument design, and music-making, but what unites us is simpler: we believe these machines were built to be played, not displayed. Every repair happens by hand at our benches, with period-correct components wherever possible and thoughtful modern solutions where reliability demands it. We test everything the only way that matters — by listening.
Whether your Juno has lost a voice, your 808 has lost its kick, or a flea-market find needs a full restoration, we treat each instrument as if it were heading back to a studio, a stage, and a long life of making noise. Because it is.
Specs and numbers
| GPT-6.1 Terra Pro | Ember-1 | |
|---|---|---|
| Maker | OpenAI | Fireworks |
| Made in | US | US |
| Released | 26 Oct 2026 | 24 Sep 2026 |
| Price in, per M tokens | $1.00 | $3.00 |
| Price out, per M tokens | $5.00 | $15.00 |
| Context | 1,050,000 tokens | 1,048,576 tokens |
| Weights | closed | closed |
| Hacker News points | — | 589 |
| Time for the six prompts | 6 min 58 s | 25 min 56 s |
| List price of the six prompts | $0.39 | $1.78 |
GPT-6.1 Terra Pro was cheaper: $1.40 less at list price, and less on each of the 6 prompts. GPT-6.1 Terra Pro was faster: 18 min 58 s less in total, and faster on each of the 6 prompts.
In the recording, both Breakout games play.
Rebuild this screen experiment: Ember-1's rebuild matched the screenshot at 67%; GPT-6.1 Terra Pro was not in it. Tea Garden experiment: Ember-1's game passed 5 of 5 checks; GPT-6.1 Terra Pro was not in it.