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DeepSeek V4.1 Flash 1017 vs GLM 5.3 Prime

6 prompts both ran·Specs and numbers·Change models

DeepSeek V4.1 Flash 1017 took 7 min 16 s and $0.068 at list price, GLM 5.3 Prime took 55 min 49 s and $3.43 at list price. GLM 5.3 Prime took 7.7× as long and cost 50× as much.

DeepSeek V4.1 Flash 1017

DeepSeek · $0.60/M out · 1,693 HN pts

GLM 5.3 Prime

Z.ai · $8.80/M out

Pelican

Generate an SVG of a pelican riding a bicycle

DeepSeek V4.1 Flash 1017's SVG for the "Pelican riding a bicycle" prompt

DeepSeek V4.1 Flash 1017

48 s$0.00711k 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 DeepSeek V4.1 Flash 1017's page for the "Wristwatch that shows the current time" prompt

DeepSeek V4.1 Flash 1017

2 min 20 s$0.01017k 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 DeepSeek V4.1 Flash 1017's page for the "Landing page for a cargo bike workshop" prompt

DeepSeek V4.1 Flash 1017

1 min 36 s$0.02746k 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 DeepSeek V4.1 Flash 1017's page for the "Playable Breakout" prompt

DeepSeek V4.1 Flash 1017

69 s$0.01525k 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.

DeepSeek V4.1 Flash 1017's SVG for the "Bookshop logo" prompt

DeepSeek V4.1 Flash 1017

76 s$0.00813k 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 devoted to keeping vintage synthesizers making the sounds they were built to make. We repair, service and restore analog instruments from the late 1960s onward, from familiar Moogs and ARPs to oddities with no service manual. Every synth that comes through the door is treated as a working instrument rather than a museum piece. We trace faults, rebuild power supplies, refresh capacitors, clean keybeds and calibrate oscillators, always with an eye on reliability and the character that made the machine worth saving. We document what we do, explain the options clearly and never replace more than necessary. Whether you need one dead voice brought back or a full restoration, we work carefully, at the bench and in conversation with you. Old synths belong on records and stages, and our job is to keep them there.

DeepSeek V4.1 Flash 1017

7 s<$0.001975 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

DeepSeek V4.1 Flash 1017GLM 5.3 Prime
MakerDeepSeekZ.ai
Made inChinaChina
Released17 Oct 202623 Sep 2026
Price in, per M tokens$0.15$2.80
Price out, per M tokens$0.60$8.80
Context1,048,576 tokens1,000,000 tokens
Weightsopenclosed
Hacker News points1,693—
Time for the six prompts7 min 16 s55 min 49 s
List price of the six prompts$0.068$3.43

DeepSeek V4.1 Flash 1017 was cheaper: $3.36 less at list price, and less on each of the 6 prompts. DeepSeek V4.1 Flash 1017 was faster: 48 min 33 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).

Rebuild this screen experiment: DeepSeek V4.1 Flash 1017's rebuild matched the screenshot at 57%; GLM 5.3 Prime was not in it. Tea Garden experiment: DeepSeek V4.1 Flash 1017's game passed 5 of 5 checks; GLM 5.3 Prime was not in it.

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