• Updated 12 Nov, 18:36 UTC
  • Next run 13 Nov, 05:17 UTCNext 13 Nov 05:17
  • Last 7 days: 9 new models · 67 runs7 d: 9 models · 67 runs
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Gemini 4 Hydrogen vs Gemini 3.8 Flash

6 prompts both ran·Specs and numbers·Change models

Gemini 4 Hydrogen took 8 min 39 s and $0.60 at list price, Gemini 3.8 Flash took 8 min 33 s and $0.32 at list price. Both took about as long, and Gemini 4 Hydrogen cost 1.9× as much.

Gemini 4 Hydrogen

Google · $7.50/M out · 168 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 Hydrogen's SVG for the "Pelican riding a bicycle" prompt

Gemini 4 Hydrogen

58 s$0.0668.8k 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 Hydrogen's page for the "Wristwatch that shows the current time" prompt

Gemini 4 Hydrogen

80 s$0.09413k 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 Hydrogen's page for the "Landing page for a cargo bike workshop" prompt

Gemini 4 Hydrogen

3 min 13 s$0.2331k 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 Hydrogen's page for the "Playable Breakout" prompt

Gemini 4 Hydrogen

1 min 36 s$0.1215k 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 Hydrogen's SVG for the "Bookshop logo" prompt

Gemini 4 Hydrogen

73 s$0.07910k 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.

In a quiet corner of Rotterdam, surrounded by the scent of warm solder and the hum of calibrated oscillators, Patchbay brings classic electronic instruments back to life. We are a three-person studio united by an obsession with vintage synthesizers and the belief that these machines belong under musicians' hands, not gathering dust in storage.

Every synthesizer that crosses our workbench carries decades of history, along with brittle capacitors, worn contacts, and drifting tuning. Whether we are facing a temperamental analog polysynth from the seventies or an early digital classic, we approach each repair with patience and precision. We do not believe in quick fixes. Instead, we study original schematics, source elusive components, and meticulously restore every circuit, keybed, and fader until the instrument plays as reliably as the day it was built. Patchbay exists to keep these irreplaceable voices singing for the next generation of artists.

Gemini 4 Hydrogen

20 s$0.0202.7k 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 HydrogenGemini 3.8 Flash
MakerGoogleGoogle
Made inUSUS
Released12 Nov 20262 Sep 2026
Price in, per M tokens$1.50$0.825
Price out, per M tokens$7.50$4.13
Context1,048,576 tokens1,048,576 tokens
Weightsclosedclosed
Hacker News points1681,293
Time for the six prompts8 min 39 s8 min 33 s
List price of the six prompts$0.60$0.32

Gemini 3.8 Flash was cheaper: $0.28 less at list price, and less on each of the 6 prompts. Both took about as long in total; Gemini 3.8 Flash was faster on 4 of the 6 prompts.

In the recording, both Breakout games play.

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