Gemini 4 Hydrogen vs Gemini 3.8 Flash
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
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.
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.
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.
Specs and numbers
| Gemini 4 Hydrogen | Gemini 3.8 Flash | |
|---|---|---|
| Maker | ||
| Made in | US | US |
| Released | 12 Nov 2026 | 2 Sep 2026 |
| Price in, per M tokens | $1.50 | $0.825 |
| Price out, per M tokens | $7.50 | $4.13 |
| Context | 1,048,576 tokens | 1,048,576 tokens |
| Weights | closed | closed |
| Hacker News points | 168 | 1,293 |
| Time for the six prompts | 8 min 39 s | 8 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.





