• Updated 11 Nov, 12:43 UTC
  • Next run 12 Nov, 05:17 UTCNext 12 Nov 05:17
  • Last 7 days: 10 new models · 61 runs7 d: 10 models · 61 runs
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Gemini 4 Carbon vs Gemini 3.8 Flash

6 prompts both ran·Specs and numbers·Change models

Gemini 4 Carbon took 18 min 40 s and $1.05 at list price, Gemini 3.8 Flash took 8 min 33 s and $0.32 at list price. Gemini 4 Carbon took 2.2× as long and cost 3.3× as much.

Gemini 4 Carbon

Google · $10.00/M out · 308 HN pts

Gemini 3.8 Flash

Google · $4.13/M out · 1,293 HN pts

Pelican

Generate an SVG of a pelican riding a bicycle

Gemini 4 Carbon's SVG for the "Pelican riding a bicycle" prompt

Gemini 4 Carbon

3 min 2 s$0.1212k tokensAPI
Gemini 3.8 Flash's SVG for the "Pelican riding a bicycle" prompt

Gemini 3.8 Flash

89 s$0.06115k 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 Gemini 4 Carbon's page for the "Wristwatch that shows the current time" prompt

Gemini 4 Carbon

5 min 21 s$0.2222k tokensAPI
Still of Gemini 3.8 Flash's page for the "Wristwatch that shows the current time" prompt

Gemini 3.8 Flash

84 s$0.04611k 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 Gemini 4 Carbon's page for the "Landing page for a cargo bike workshop" prompt

Gemini 4 Carbon

3 min 59 s$0.2727k tokensAPI
Still of Gemini 3.8 Flash's page for the "Landing page for a cargo bike workshop" prompt

Gemini 3.8 Flash

2 min 57 s$0.1229k 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 Gemini 4 Carbon's page for the "Playable Breakout" prompt

Gemini 4 Carbon

2 min 25 s$0.1919k tokensAPI
Still of Gemini 3.8 Flash's page for the "Playable Breakout" prompt

Gemini 3.8 Flash

81 s$0.05714k tokensAPI

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

Gemini 4 Carbon's SVG for the "Bookshop logo" prompt

Gemini 4 Carbon

3 min 20 s$0.2323k tokensAPI
Gemini 3.8 Flash's SVG for the "Bookshop logo" prompt

Gemini 3.8 Flash

70 s$0.0368.8k 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.

Tucked away in a bright workshop near the Rotterdam docks, Patchbay is a three-person studio dedicated to keeping electronic music history alive. We repair, restore, and calibrate vintage synthesizers, drum machines, and outboard gear. Whether it is a temperamental Juno with failing voice chips, a road-worn Minimoog drifting out of tune, or an obscure polysynth needing a complete overhaul, our benches are built for machines that make noise.

Between the three of us, we combine decades of experience in electronics, sound design, and obsessive troubleshooting. We do not view classic synthesizers as fragile museum pieces meant to sit behind glass; they are working instruments built to be played, patched, and pushed to their limits. Armed with original schematics, precision test gear, and a deep respect for analog circuitry, we bring tired hardware back from the brink—ready for another forty years in the studio or on stage.

Gemini 4 Carbon

33 s$0.0202.0k tokensAPI

Tucked away in Rotterdam, Patchbay is a three-person repair studio dedicated to the preservation and revival of vintage synthesizers. We believe that classic instruments are living machines rather than museum relics—tools built to inspire, create, and be played loud. Between the three of us, we combine decades of experience in electronics engineering, sound design, and meticulous craftsmanship. Whether tracking down elusive voice chips for an eighties polyphonic giant, rebuilding power supplies, or recalibrating the drift on a cantankerous monophonic circuit from the seventies, we treat every piece of gear with obsessive attention to detail. Our workbench is built on a deep respect for historical engineering and a refusal to cut corners. For musicians, producers, and collectors across the Netherlands and beyond, Patchbay is where forgotten circuits find their current again, keeping the tactile soul of analog synthesis alive and resonant.

Gemini 3.8 Flash

13 s$0.003811 tokensAPI

Specs and numbers

Gemini 4 CarbonGemini 3.8 Flash
MakerGoogleGoogle
Made inUSUS
Released10 Nov 20262 Sep 2026
Price in, per M tokens$2.00$0.825
Price out, per M tokens$10.00$4.13
Context1,048,576 tokens1,048,576 tokens
Weightsclosedclosed
Hacker News points3081,293
Time for the six prompts18 min 40 s8 min 33 s
List price of the six prompts$1.05$0.32

Gemini 3.8 Flash was cheaper: $0.73 less at list price, and less on each of the 6 prompts. Gemini 3.8 Flash was faster: 10 min 7 s less in total, and faster on each of the 6 prompts.

In the recording, both Breakout games play.

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