• 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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GPT-6.1 Sol vs Claude Fable 5.1

6 prompts both ran·Specs and numbers·Change models

GPT-6.1 Sol took 12 min 10 s and $0.37 at list price, Claude Fable 5.1 took 16 min 4 s and $3.97 at list price. Claude Fable 5.1 took 1.3× as long and cost 11× as much.

GPT-6.1 Sol

OpenAI · $10.00/M out · 1,166 HN pts

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

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
Claude Fable 5.1's SVG for the "Pelican riding a bicycle" prompt

Claude Fable 5.1

26 s$0.0971.9k tokensCLI

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 Claude Fable 5.1's page for the "Wristwatch that shows the current time" prompt

Claude Fable 5.1

2 min 16 s$0.6012k tokensCLI

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 Claude Fable 5.1's page for the "Landing page for a cargo bike workshop" prompt

Claude Fable 5.1

5 min 44 s$1.4729k tokensCLI

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 Claude Fable 5.1's page for the "Playable Breakout" prompt

Claude Fable 5.1

5 min 38 s$1.4228k tokensCLI

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
Claude Fable 5.1's SVG for the "Bookshop logo" prompt

Claude Fable 5.1

1 min 43 s$0.357.0k tokensCLI

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 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.

Claude Fable 5.1

17 s$0.025494 tokensCLI

Specs and numbers

GPT-6.1 SolClaude Fable 5.1
MakerOpenAIAnthropic
Made inUSUS
Released29 Sep 20261 Sep 2026
Price in, per M tokens$2.00$10.00
Price out, per M tokens$10.00$50.00
Context1,050,000 tokens1,000,000 tokens
Weightsclosedclosed
Hacker News points1,1661,630
Time for the six prompts12 min 10 s16 min 4 s
List price of the six prompts$0.37$3.97

GPT-6.1 Sol was cheaper: $3.60 less at list price, and less on each of the 6 prompts. GPT-6.1 Sol was faster: 3 min 55 s less in total, and faster on 4 of the 6 prompts.

In the recording, GPT-6.1 Sol's Breakout game plays; Claude Fable 5.1's stopped painting.

Rebuild this screen experiment: GPT-6.1 Sol's rebuild matched the screenshot at 97%, Claude Fable 5.1's 78%. Tea Garden experiment: GPT-6.1 Sol's game passed 5 of 5 checks, Claude Fable 5.1's 5 of 5.

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