• Updated 2 Nov, 13:50 UTC
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GLM 5.3 FlashX Legal vs Claude Haiku 5.5

6 prompts both ran·Specs and numbers·Change models

GLM 5.3 FlashX Legal took 45 min 14 s and $0.42 at list price, Claude Haiku 5.5 took 4 min 43 s and $0.035 at list price. GLM 5.3 FlashX Legal took 9.6× as long and cost 12× as much.

GLM 5.3 FlashX Legal

Z.ai · $1.25/M out

Claude Haiku 5.5

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

Pelican

Generate an SVG of a pelican riding a bicycle

GLM 5.3 FlashX Legal's SVG for the "Pelican riding a bicycle" prompt

GLM 5.3 FlashX Legal

6 min 19 s$0.05947k 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 GLM 5.3 FlashX Legal's page for the "Wristwatch that shows the current time" prompt

GLM 5.3 FlashX Legal

9 min 36 s$0.08467k 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 GLM 5.3 FlashX Legal's page for the "Landing page for a cargo bike workshop" prompt

GLM 5.3 FlashX Legal

12 min 13 s$0.1292k 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 GLM 5.3 FlashX Legal's page for the "Playable Breakout" prompt

GLM 5.3 FlashX Legal

11 min 20 s$0.1184k 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.

GLM 5.3 FlashX Legal's SVG for the "Bookshop logo" prompt

GLM 5.3 FlashX Legal

5 min 42 s$0.05141k 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 three-person studio in Rotterdam devoted to the repair and restoration of vintage synthesizers. We work on the machines that shaped the sound of the last fifty years — Roland, Moog, Yamaha, Korg, EMS, and the rest — from the rare and legendary to the well-loved and well-worn.

We started the studio because these instruments matter. They were built to be repaired, with discrete components, schematics, and construction that reward patience and care. Somewhere along the way, that way of making things fell out of fashion. We think it's worth keeping alive.

Every synthesizer that comes through our door is treated the same way: carefully diagnosed, honestly assessed, and repaired with respect for its original character. No unnecessary modifications, no shortcuts that compromise the instrument. Whether it's a failed voice chip, a dead key, or years of dust and neglect, our job is to put the machine back in the hands of the people who play it.

GLM 5.3 FlashX Legal

3 s<$0.001238 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

GLM 5.3 FlashX LegalClaude Haiku 5.5
MakerZ.aiAnthropic
Made inChinaUS
Released2 Nov 20267 Oct 2026
Price in, per M tokens$0.37$0.10
Price out, per M tokens$1.25$0.50
Context1,048,576 tokens1,000,000 tokens
Weightsclosedclosed
Hacker News points—1,071
Time for the six prompts45 min 14 s4 min 43 s
List price of the six prompts$0.42$0.035

Claude Haiku 5.5 was cheaper: $0.38 less at list price, and less on each of the 6 prompts. Claude Haiku 5.5 was faster: 40 min 30 s less in total, and faster on each of the 6 prompts.

In the recording, both Breakout games play.

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