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Claude Haiku 5.5 vs GLM 5.3 Prime

6 prompts both ran·Specs and numbers·Change models

Claude Haiku 5.5 took 4 min 43 s and $0.035 at list price, GLM 5.3 Prime took 55 min 49 s and $3.43 at list price. GLM 5.3 Prime took 12× as long and cost 97× as much.

Claude Haiku 5.5

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

GLM 5.3 Prime

Z.ai · $8.80/M out

Pelican

Generate an SVG of a pelican riding a bicycle

Claude Haiku 5.5's SVG for the "Pelican riding a bicycle" prompt

Claude Haiku 5.5

13 s$0.0012.7k tokensAPI
GLM 5.3 Prime's SVG for the "Pelican riding a bicycle" prompt

GLM 5.3 Prime

6 min 15 s$0.4956k 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 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
Still of GLM 5.3 Prime's page for the "Wristwatch that shows the current time" prompt

GLM 5.3 Prime

14 min 23 s$0.6776k 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 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
Still of GLM 5.3 Prime's page for the "Landing page for a cargo bike workshop" prompt

GLM 5.3 Prime

15 min 37 s$1.15131k 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 Claude Haiku 5.5's page for the "Playable Breakout" prompt

Claude Haiku 5.5

2 min 21 s$0.01836k tokensAPI
Still of GLM 5.3 Prime's page for the "Playable Breakout" prompt

GLM 5.3 Prime

12 min 56 s$0.6270k tokensAPI

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

Claude Haiku 5.5's SVG for the "Bookshop logo" prompt

Claude Haiku 5.5

13 s$0.0012.6k tokensAPI
GLM 5.3 Prime's SVG for the "Bookshop logo" prompt

GLM 5.3 Prime

6 min 18 s$0.4854k 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, 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

Some of the machines we work on were built before any of us were born. Patchbay is a three-person repair studio in Rotterdam, and what we do is simple to describe: we keep vintage synthesizers playing. A Minimoog that sat in an attic for thirty years. A Juno-60 with keys that no longer speak. A modular system that hums where it should roar. Whatever comes through our door gets opened up, traced through, and brought back.

That means rebuilding power supplies, cleaning a thousand key contacts, chasing a fault across three boards until it turns out to be a single cracked solder joint. It means calibrating oscillators that have drifted for decades, and listening — really listening — until a filter sounds the way it did the day it left the factory.

We do this because these instruments still sound like nothing else, and because somewhere a player is waiting to hear one come back to life.

GLM 5.3 Prime

21 s$0.0182.0k tokensAPI

Specs and numbers

Claude Haiku 5.5GLM 5.3 Prime
MakerAnthropicZ.ai
Made inUSChina
Released7 Oct 202623 Sep 2026
Price in, per M tokens$0.10$2.80
Price out, per M tokens$0.50$8.80
Context1,000,000 tokens1,000,000 tokens
Weightsclosedclosed
Hacker News points1,071—
Time for the six prompts4 min 43 s55 min 49 s
List price of the six prompts$0.035$3.43

Claude Haiku 5.5 was cheaper: $3.39 less at list price, and less on each of the 6 prompts. Claude Haiku 5.5 was faster: 51 min 6 s less in total, and faster on each of the 6 prompts.

In the recording, both Breakout games play. GLM 5.3 Prime's landing page was cut off at the output limit (131,072 tokens).

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