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Flint vs GLM 5.3 Prime

6 prompts both ran·Specs and numbers·Change models

Flint took 10 min 5 s and was free at list price, GLM 5.3 Prime took 55 min 49 s and $3.43 at list price. GLM 5.3 Prime took 5.5× as long.

Flint

Recursive · free route · 36 HN pts

GLM 5.3 Prime

Z.ai · $8.80/M out

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

Flint

2 min 11 sfree18k 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 Flint's page for the "Landing page for a cargo bike workshop" prompt

Flint

2 min 52 sfree22k 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 Flint's page for the "Playable Breakout" prompt

Flint

2 min 19 sfree18k 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.

Flint's SVG for the "Bookshop logo" prompt

Flint

1 min 47 sfree13k 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 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

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

FlintGLM 5.3 Prime
MakerRecursiveZ.ai
Made inUSChina
Released21 Oct 202623 Sep 2026
Price in, per M tokensfree route (list $0/M)$2.80
Price out, per M tokensfree route (list $0/M)$8.80
Context262,144 tokens1,000,000 tokens
Weightsopenclosed
Hacker News points36—
Time for the six prompts10 min 5 s55 min 49 s
List price of the six promptsfree$3.43

Flint was free at list price; GLM 5.3 Prime cost $3.43. Flint was faster: 45 min 45 s less in total, and faster on each of the 6 prompts.

In the recording, Flint's Breakout game loads but doesn't start; GLM 5.3 Prime's plays. GLM 5.3 Prime's landing page was cut off at the output limit (131,072 tokens).

Tea Garden experiment: Flint's game passed 5 of 5 checks; GLM 5.3 Prime was not in it.

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