Muse Spark Open vs Claude Sonnet 5.5
Muse Spark Open took 9 min 38 s and $0.29 at list price, Claude Sonnet 5.5 took 3 min 49 s and $0.34 at list price. Muse Spark Open took 2.5× as long, and Claude Sonnet 5.5 cost 1.2× as much.
Muse Spark Open
Meta · $4.25/M out · 1,383 HN pts
Claude Sonnet 5.5
Anthropic · $10.00/M out · 9 HN pts
Only Claude Sonnet 5.5 has CLI runs here (Claude Code).
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 three people in a workshop in Rotterdam, trying to keep old synthesizers alive. We repair, restore and recalibrate the instruments that shaped electronic music: Moogs and Oberheims, Rolands and Sequential Circuits, the odd temperamental Soviet oddity that someone found in an attic.
Most of what lands on our benches has been silent for years. A crackling pot, a drifting oscillator, a power supply that gave up in 1994. Some come from working musicians who need their instrument back before the next tour. Others come from people who inherited a dusty box from a parent and want to hear what it sounds like.
We work slowly and by hand. We trace faults with a scope and a schematic, source or rebuild parts when originals are gone, and change as little as we can. Every synth leaves with a note describing exactly what we did, so the next person to open it knows where we have been.
Come by, bring your synth, and stay for coffee.
Specs and numbers
| Muse Spark Open | Claude Sonnet 5.5 | |
|---|---|---|
| Maker | Meta | Anthropic |
| Made in | US | US |
| Released | 15 Oct 2026 | 28 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 | 1,000,000 tokens |
| Weights | open | closed |
| Hacker News points | 1,383 | 9 |
| Time for the six prompts | 9 min 38 s | 3 min 49 s |
| List price of the six prompts | $0.29 | $0.34 |
Muse Spark Open was cheaper: $0.054 less at list price, and less on 4 of the 6 prompts. Claude Sonnet 5.5 was faster: 5 min 49 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%, Claude Sonnet 5.5's 94%. Tea Garden experiment: Muse Spark Open's game passed 5 of 5 checks, Claude Sonnet 5.5's 5 of 5.





