• Updated 31 Oct, 14:35 UTC
  • Next run 1 Nov, 05:17 UTCNext 1 Nov 05:17
  • Last 7 days: 4 new models · 448 runs7 d: 4 models · 448 runs
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GLM 5.3 Flash vs Kimi K3

6 prompts both ran·Specs and numbers·Change models

GLM 5.3 Flash took 59 min 10 s and $0.037 at list price, Kimi K3 took 22 min 52 s and $1.92 at list price. GLM 5.3 Flash took 2.6× as long, and Kimi K3 cost 51× as much.

GLM 5.3 Flash

Z.ai · $0.148/M out · 1,329 HN pts

Kimi K3

Moonshot AI · $15.00/M out · 9,870 HN pts

Pelican

Generate an SVG of a pelican riding a bicycle

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

GLM 5.3 Flash

2 min 23 s$0.0019.9k tokensAPI
Kimi K3's SVG for the "Pelican riding a bicycle" prompt

Kimi K3

6 min 9 s$0.2718k 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 Flash's page for the "Wristwatch that shows the current time" prompt

GLM 5.3 Flash

17 min 21 s$0.01069k tokensAPI
Still of Kimi K3's page for the "Wristwatch that shows the current time" prompt

Kimi K3

3 min 36 s$0.4429k 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 Flash's page for the "Landing page for a cargo bike workshop" prompt

GLM 5.3 Flash

22 min 43 s$0.01498k tokensAPI
Still of Kimi K3's page for the "Landing page for a cargo bike workshop" prompt

Kimi K3

6 min 35 s$0.5033k 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 Flash's page for the "Playable Breakout" prompt

GLM 5.3 Flash

13 min 57 s$0.01065k tokensAPI
Still of Kimi K3's page for the "Playable Breakout" prompt

Kimi K3

4 min 25 s$0.4530k tokensAPI

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

GLM 5.3 Flash's SVG for the "Bookshop logo" prompt

GLM 5.3 Flash

2 min 40 s$0.00211k tokensAPI
Kimi K3's SVG for the "Bookshop logo" prompt

Kimi K3

2 min 2 s$0.2516k 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 the way most repair shops do: with a broken synth, a stubborn owner, and a soldering iron that refused to stay idle. We're three people—Joris, Marit, and Tomas—working out of a small workshop on the back streets of Rotterdam-Noord, surrounded by oscilloscopes, spare parts, and instruments that sometimes arrive in worse condition than their owners admit.

Between us, we've spent decades repairing and restoring vintage synthesizers: Rolands, Moogs, Korgs, Yamahas, and machines whose manuals were never written in the first place. We don't sell anything. We fix things. That focus keeps us honest and keeps the work slow, careful, and done properly.

We believe old instruments deserve to keep making music, not gather dust in attics or fetch prices only collectors can pay. Whether it's a cracked keybed, a dying power supply, or a voice that's gone quiet, we'd like to help bring it back.

GLM 5.3 Flash

6 s<$0.001414 tokensAPI

Patchbay is a small workshop in Rotterdam where old synthesizers come back to life. We are three people — a former recording engineer, a self-taught circuit obsessive, and a classically trained pianist who fell in love with broken machines — and between us we have spent decades coaxing sound out of equipment the rest of the world gave up on.

We started Patchbay because we kept meeting the same problem: beloved instruments sitting silent in attics and studio corners, written off as unfixable. A Juno with a dead voice chip. A Prophet that drifts out of tune. A Moog that hums when it shouldn't. To us, none of these are lost causes. They are instruments with history in them, and they deserve careful hands, original parts where possible, and honest work.

Every synth that leaves our bench is played, tested, and listened to — because that is what it was made for.

Kimi K3

6 s$0.013872 tokensAPI

Specs and numbers

GLM 5.3 FlashKimi K3
MakerZ.aiMoonshot AI
Made inChinaChina
Released26 Aug 202616 Jul 2026
Price in, per M tokens$0.016$0.192
Price out, per M tokens$0.148$15.00
Context1,048,576 tokens1,048,576 tokens
Weightsopenopen
Hacker News points1,3299,870
Time for the six prompts59 min 10 s22 min 52 s
List price of the six prompts$0.037$1.92

GLM 5.3 Flash was cheaper: $1.88 less at list price, and less on each of the 6 prompts. Kimi K3 was faster: 36 min 18 s less in total, and faster on 5 of the 6 prompts.

In the recording, both Breakout games play.

Rebuild this screen experiment: Kimi K3's rebuild matched the screenshot at 68%; GLM 5.3 Flash was not in it. Tea Garden experiment: Kimi K3's game passed 5 of 5 checks; GLM 5.3 Flash was not in it.

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