• Updated 31 Oct, 14:35 UTC
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Flint vs Muse Spark Open

6 prompts both ran·Specs and numbers·Change models

Flint took 10 min 5 s and was free at list price, Muse Spark Open took 9 min 38 s and $0.29 at list price. Both took about as long.

Flint

Recursive · free route · 36 HN pts

Muse Spark Open

Meta · $4.25/M out · 1,383 HN pts

Pelican

Generate an SVG of a pelican riding a bicycle

Flint's SVG for the "Pelican riding a bicycle" prompt

Flint

43 sfree5.6k tokensAPI
Muse Spark Open's SVG for the "Pelican riding a bicycle" prompt

Muse Spark Open

81 s$0.0389.0k tokensAPI

Watch

Draw a mechanical wristwatch that shows the current local time, with a sweeping seconds hand and a date window. Make it look expensive.

Still of Flint's page for the "Wristwatch that shows the current time" prompt

Flint

2 min 11 sfree18k tokensAPI
Still of Muse Spark Open's page for the "Wristwatch that shows the current time" prompt

Muse Spark Open

43 s$0.05212k tokensAPI

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.

Still of Flint's page for the "Landing page for a cargo bike workshop" prompt

Flint

2 min 52 sfree22k tokensAPI
Still of Muse Spark Open's page for the "Landing page for a cargo bike workshop" prompt

Muse Spark Open

4 min 12 s$0.08720k tokensAPI

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.

Still of Flint's page for the "Playable Breakout" prompt

Flint

2 min 19 sfree18k tokensAPI
Still of Muse Spark Open's page for the "Playable Breakout" prompt

Muse Spark Open

2 min 40 s$0.06916k tokensAPI

Design a logo for Night Heron, an independent bookshop that only opens after dark.

Flint's SVG for the "Bookshop logo" prompt

Flint

1 min 47 sfree13k tokensAPI
Muse Spark Open's SVG for the "Bookshop logo" prompt

Muse Spark Open

37 s$0.0378.7k tokensAPI

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 began in a small, cluttered workshop in Rotterdam, where solder smoke and old capacitors seem to belong together. We are a three-person studio, which means every synthesizer that comes through our door is handled by one of the same people who started the project. No call center, no hand-off to strangers. We repair vintage synthesizers: the dusty analog beasts, the rare oddities, the ones with missing knobs and mysterious tuning drift. Our work is part electronics, part archaeology, part stubborn love. We listen to the hum before we open the case, and we believe most vintage synths are not dead, just waiting for someone to pay attention. In a city known for moving quickly, we prefer taking our time. Patchbay exists to keep old voices alive, one oscillator, filter, and power supply at a time. If you have a synth that sings, whispers, or hums through the decades, we would be glad to meet it.

Flint

13 sfree1.5k tokensAPI

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.

Muse Spark Open

4 s$0.0051.0k tokensAPI

Specs and numbers

FlintMuse Spark Open
MakerRecursiveMeta
Made inUSUS
Released21 Oct 202615 Oct 2026
Price in, per M tokensfree route (list $0/M)$1.25
Price out, per M tokensfree route (list $0/M)$4.25
Context262,144 tokens1,048,576 tokens
Weightsopenopen
Hacker News points361,383
Time for the six prompts10 min 5 s9 min 38 s
List price of the six promptsfree$0.29

Flint was free at list price; Muse Spark Open cost $0.29. Both took about as long in total, and each was faster on 3 of the 6 prompts.

In the recording, Flint's Breakout game loads but doesn't start; Muse Spark Open's plays.

Rebuild this screen experiment: Muse Spark Open's rebuild matched the screenshot at 53%; Flint was not in it. Tea Garden experiment: Flint's game passed 5 of 5 checks, Muse Spark Open's 5 of 5.

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