GLM 5.3 FlashX Legal vs Claude Fable 5.1
GLM 5.3 FlashX Legal took 45 min 14 s and $0.42 at list price, Claude Fable 5.1 took 16 min 4 s and $3.97 at list price. GLM 5.3 FlashX Legal took 2.8× as long, and Claude Fable 5.1 cost 9.6× as much.
GLM 5.3 FlashX Legal
Z.ai · $1.25/M out
Claude Fable 5.1
Anthropic · $50.00/M out · 1,630 HN pts
Only Claude Fable 5.1 has CLI runs here (Claude Code).
Pelican
Generate an SVG of a pelican riding a bicycle
Watch
Draw a mechanical wristwatch that shows the current local time, with a sweeping seconds hand and a date window. Make it look expensive.
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.
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.
Logo
Design a logo for Night Heron, an independent bookshop that only opens after dark.
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 the repair and restoration of vintage synthesizers. We work on the machines that shaped the sound of the last fifty years — Roland, Moog, Yamaha, Korg, EMS, and the rest — from the rare and legendary to the well-loved and well-worn.
We started the studio because these instruments matter. They were built to be repaired, with discrete components, schematics, and construction that reward patience and care. Somewhere along the way, that way of making things fell out of fashion. We think it's worth keeping alive.
Every synthesizer that comes through our door is treated the same way: carefully diagnosed, honestly assessed, and repaired with respect for its original character. No unnecessary modifications, no shortcuts that compromise the instrument. Whether it's a failed voice chip, a dead key, or years of dust and neglect, our job is to put the machine back in the hands of the people who play it.
Patchbay is three people and one workshop in Rotterdam, and we spend our days bringing old synthesizers back to life. Most of what arrives at our bench is somewhere between thirty and fifty years old: a Juno with a dead voice chip, a Minimoog that drifts out of tune the moment the room warms up, a Polysix whose battery has quietly eaten its own circuit board. We know these instruments inside and out because we have had hundreds of them open on the table.
We started Patchbay because we kept meeting musicians who had been told their synth was not worth fixing. We disagree. These machines were built to be serviced, and with the right parts, enough patience, and a good set of schematics, almost any of them can be made to play again. When we hand an instrument back, we want it to sound the way it did the day it left the factory, or better.
Specs and numbers
| GLM 5.3 FlashX Legal | Claude Fable 5.1 | |
|---|---|---|
| Maker | Z.ai | Anthropic |
| Made in | China | US |
| Released | 2 Nov 2026 | 1 Sep 2026 |
| Price in, per M tokens | $0.37 | $10.00 |
| Price out, per M tokens | $1.25 | $50.00 |
| Context | 1,048,576 tokens | 1,000,000 tokens |
| Weights | closed | closed |
| Hacker News points | — | 1,630 |
| Time for the six prompts | 45 min 14 s | 16 min 4 s |
| List price of the six prompts | $0.42 | $3.97 |
GLM 5.3 FlashX Legal was cheaper: $3.56 less at list price, and less on each of the 6 prompts. Claude Fable 5.1 was faster: 29 min 9 s less in total, and faster on 5 of the 6 prompts.
In the recording, GLM 5.3 FlashX Legal's Breakout game plays; Claude Fable 5.1's stopped painting.
Rebuild this screen experiment: Claude Fable 5.1's rebuild matched the screenshot at 78%; GLM 5.3 FlashX Legal was not in it. Tea Garden experiment: Claude Fable 5.1's game passed 5 of 5 checks; GLM 5.3 FlashX Legal was not in it.





