• Updated 31 Oct, 14:35 UTC
  • Next run 1 Nov, 05:17 UTCNext 1 Nov 05:17
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Muse Spark Open vs Claude Haiku 5.5

6 prompts both ran·Specs and numbers·Change models

Muse Spark Open took 9 min 38 s and $0.29 at list price, Claude Haiku 5.5 took 4 min 43 s and $0.035 at list price. Muse Spark Open took 2.0× as long and cost 8.1× as much.

Muse Spark Open

Meta · $4.25/M out · 1,383 HN pts

Claude Haiku 5.5

Anthropic · $0.50/M out · 1,071 HN pts

Pelican

Generate an SVG of a pelican riding a bicycle

Muse Spark Open's SVG for the "Pelican riding a bicycle" prompt

Muse Spark Open

81 s$0.0389.0k tokensAPI
Claude Haiku 5.5's SVG for the "Pelican riding a bicycle" prompt

Claude Haiku 5.5

13 s$0.0012.7k 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 Muse Spark Open's page for the "Wristwatch that shows the current time" prompt

Muse Spark Open

43 s$0.05212k tokensAPI
Still of Claude Haiku 5.5's page for the "Wristwatch that shows the current time" prompt

Claude Haiku 5.5

34 s$0.0047.6k 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 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
Still of Claude Haiku 5.5's page for the "Landing page for a cargo bike workshop" prompt

Claude Haiku 5.5

80 s$0.01122k 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 Muse Spark Open's page for the "Playable Breakout" prompt

Muse Spark Open

2 min 40 s$0.06916k tokensAPI
Still of Claude Haiku 5.5's page for the "Playable Breakout" prompt

Claude Haiku 5.5

2 min 21 s$0.01836k tokensAPI

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

Muse Spark Open's SVG for the "Bookshop logo" prompt

Muse Spark Open

37 s$0.0378.7k tokensAPI
Claude Haiku 5.5's SVG for the "Bookshop logo" prompt

Claude Haiku 5.5

13 s$0.0012.6k 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 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

Patchbay is a three-person studio in Rotterdam, and we spend our days inside vintage synthesizers. We are repair technicians first: we open the cases, replace the leaking capacitors, re-tune the oscillators that have drifted out of pitch, and bring back the filters that went silent decades ago. Our bench is crowded with service manuals, spare chips, and a soldering station that has seen more Moog panels than we can count. We started the studio because we kept meeting musicians whose favourite instruments sat unused in cupboards, not because they were broken beyond saving but because nobody nearby knew how to fix them. We still believe most of these machines can be made to sing again, and we would rather spend an afternoon finding the one bad resistor than see another good synth end up in a skip.

Claude Haiku 5.5

2 s<$0.001252 tokensAPI

Specs and numbers

Muse Spark OpenClaude Haiku 5.5
MakerMetaAnthropic
Made inUSUS
Released15 Oct 20267 Oct 2026
Price in, per M tokens$1.25$0.10
Price out, per M tokens$4.25$0.50
Context1,048,576 tokens1,000,000 tokens
Weightsopenclosed
Hacker News points1,3831,071
Time for the six prompts9 min 38 s4 min 43 s
List price of the six prompts$0.29$0.035

Claude Haiku 5.5 was cheaper: $0.25 less at list price, and less on each of the 6 prompts. Claude Haiku 5.5 was faster: 4 min 54 s less in total, and faster on each 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 Haiku 5.5 was not in it. Tea Garden experiment: Muse Spark Open's game passed 5 of 5 checks; Claude Haiku 5.5 was not in it.

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