Muse Spark Open vs GPT-6.1 Sol
Muse Spark Open took 9 min 38 s and $0.29 at list price, GPT-6.1 Sol took 12 min 10 s and $0.37 at list price. GPT-6.1 Sol took 1.3× as long and cost 1.3× as much.
Muse Spark Open
Meta · $4.25/M out · 1,383 HN pts
GPT-6.1 Sol
OpenAI · $10.00/M out · 1,166 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 small studio in Rotterdam where vintage synthesizers come back to life. We are three technicians, musicians and longtime collectors who have spent the last decade trading schematics, hunting spare parts, and learning the quirks of every oscillator and filter that has passed through our hands.
What started as helping friends keep their Junos and ARPs in tune has grown into a dedicated workshop in the north of the city. We repair, restore and service instruments from the sixties to the early nineties, from well-known classics to rare prototypes that barely left the factory.
We believe these machines are more than equipment. They carry histories, imperfections and sounds that cannot be replaced. Our job is to respect that character while making sure each instrument is reliable, playable, and ready for another lifetime of music.
Patchbay is a three-person studio in Rotterdam, keeping vintage synthesizers in working hands. We repair the instruments that have picked up a crackle, lost a voice, drifted out of tune, or stopped making sound altogether.
We like the patient side of repair: tracing a fault, understanding an old circuit, and finding the right fix rather than the quickest workaround. Our aim is to make each instrument dependable without sanding away the character that made someone fall for it in the first place.
Some synths arrive with a clear problem. Others come with a story and a noise that only happens after twenty minutes. Either way, the work starts with listening—to the instrument and to the person who plays it.
We’re a small studio by choice. It keeps us close to the work, and to the musicians who trust us with something they want to keep making music with.
Specs and numbers
| Muse Spark Open | GPT-6.1 Sol | |
|---|---|---|
| Maker | Meta | OpenAI |
| Made in | US | US |
| Released | 15 Oct 2026 | 29 Sep 2026 |
| Price in, per M tokens | $1.25 | $2.00 |
| Price out, per M tokens | $4.25 | $10.00 |
| Context | 1,048,576 tokens | 1,050,000 tokens |
| Weights | open | closed |
| Hacker News points | 1,383 | 1,166 |
| Time for the six prompts | 9 min 38 s | 12 min 10 s |
| List price of the six prompts | $0.29 | $0.37 |
Muse Spark Open was cheaper: $0.081 less at list price, and less on 3 of the 6 prompts. Muse Spark Open was faster: 2 min 32 s less in total, and faster on 5 of the 6 prompts.
In the recording, both Breakout games play.
Rebuild this screen experiment: Muse Spark Open's rebuild matched the screenshot at 53%, GPT-6.1 Sol's 97%. Tea Garden experiment: Muse Spark Open's game passed 5 of 5 checks, GPT-6.1 Sol's 5 of 5.





