• Updated 31 Oct, 14:35 UTC
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GPT-6.1 Sol vs GLM 5.3

6 prompts both ran·Specs and numbers·Change models

GPT-6.1 Sol took 12 min 10 s and $0.37 at list price, GLM 5.3 took 22 min 22 s and $0.34 at list price. GLM 5.3 took 1.8× as long, and GPT-6.1 Sol cost 1.1× as much.

GPT-6.1 Sol

OpenAI · $10.00/M out · 1,166 HN pts

GLM 5.3

Z.ai · $1.40/M out · 3,306 HN pts

Pelican

Generate an SVG of a pelican riding a bicycle

GPT-6.1 Sol's SVG for the "Pelican riding a bicycle" prompt

GPT-6.1 Sol

1 min 30 s$0.0383.8k tokensAPI
GLM 5.3's SVG for the "Pelican riding a bicycle" prompt

GLM 5.3

4 min 2 s$0.08360k 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 GPT-6.1 Sol's page for the "Wristwatch that shows the current time" prompt

GPT-6.1 Sol

2 min 22 s$0.0717.0k tokensAPI
Still of GLM 5.3's page for the "Wristwatch that shows the current time" prompt

GLM 5.3

2 min 1 s$0.02921k 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 GPT-6.1 Sol's page for the "Landing page for a cargo bike workshop" prompt

GPT-6.1 Sol

4 min 58 s$0.1616k tokensAPI
Still of GLM 5.3's page for the "Landing page for a cargo bike workshop" prompt

GLM 5.3

9 min$0.1391k 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 GPT-6.1 Sol's page for the "Playable Breakout" prompt

GPT-6.1 Sol

2 min 27 s$0.0828.2k tokensAPI
Still of GLM 5.3's page for the "Playable Breakout" prompt

Blank first frame. Press Run.

GLM 5.3

31 s$0.0096.7k tokensAPI

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

GPT-6.1 Sol's SVG for the "Bookshop logo" prompt

GPT-6.1 Sol

45 s$0.0191.9k tokensAPI
GLM 5.3's SVG for the "Bookshop logo" prompt

GLM 5.3

6 min 28 s$0.08460k 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, keeping vintage synthesizers in working hands. We repair the instruments that have picked up a crackle, lost a voice, drifted out of tune, or stopped making sound altogether.

We like the patient side of repair: tracing a fault, understanding an old circuit, and finding the right fix rather than the quickest workaround. Our aim is to make each instrument dependable without sanding away the character that made someone fall for it in the first place.

Some synths arrive with a clear problem. Others come with a story and a noise that only happens after twenty minutes. Either way, the work starts with listening—to the instrument and to the person who plays it.

We’re a small studio by choice. It keeps us close to the work, and to the musicians who trust us with something they want to keep making music with.

GPT-6.1 Sol

9 s$0.002228 tokensAPI

Patchbay is a three-person workshop in Rotterdam where vintage synthesizers come back to life. Whatever lands on our bench — a battered Minimoog, a Juno with dead keys, an ARP silent since the eighties — gets the same treatment: careful diagnosis, honest advice, and repairs done right.

We started Patchbay because we believe a good synthesizer shouldn't die of old age. These machines are more than circuits and sliders — they're the sound of records you grew up with, and the reason some of us got into music in the first place. Every one we fix goes back out into the world ready to make more.

Between us we handle everything from recapping and calibration to keybed work and the hunt for parts nobody has made in decades. It's slow, meticulous work, and we like it that way. If something in your collection hums, crackles, or refuses to turn on, bring it in — we'll see what we can do.

GLM 5.3

19 s$0.0064.3k tokensAPI

Specs and numbers

GPT-6.1 SolGLM 5.3
MakerOpenAIZ.ai
Made inUSChina
Released29 Sep 202618 Aug 2026
Price in, per M tokens$2.00$0.07
Price out, per M tokens$10.00$1.40
Context1,050,000 tokens1,048,576 tokens
Weightsclosedopen
Hacker News points1,1663,306
Time for the six prompts12 min 10 s22 min 22 s
List price of the six prompts$0.37$0.34

GLM 5.3 was cheaper: $0.029 less at list price, and less on 3 of the 6 prompts. GPT-6.1 Sol was faster: 10 min 12 s less in total, and faster on 4 of the 6 prompts.

In the recording, GPT-6.1 Sol's Breakout game plays; GLM 5.3's stopped painting. GLM 5.3's Breakout game showed a blank first frame when the still was taken.

Rebuild this screen experiment: GPT-6.1 Sol's rebuild matched the screenshot at 97%; GLM 5.3 was not in it. Tea Garden experiment: GPT-6.1 Sol's game passed 5 of 5 checks, GLM 5.3's 1 of 5.

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