GPT-6.1 Terra Pro vs DeepSeek V4.1 Flash
GPT-6.1 Terra Pro took 6 min 58 s and $0.39 at list price, DeepSeek V4.1 Flash took 9 min 16 s and $0.063 at list price. DeepSeek V4.1 Flash took 1.3× as long, and GPT-6.1 Terra Pro cost 6.1× as much.
GPT-6.1 Terra Pro
OpenAI · $5.00/M out
DeepSeek V4.1 Flash
DeepSeek · $0.50/M out · 1,482 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.
Patchbay is a three-person studio in Rotterdam dedicated to repairing vintage synthesizers. We work on the instruments that have shaped decades of music, from well-loved studio staples to curious machines that have spent years in storage.
Old synthesizers develop problems in their own ways. A key stops responding, a filter drifts, a power supply gives out. We take the time to trace the fault, understand the instrument and make a repair that respects how it was built. Wherever possible, we preserve original components; when a part needs replacing, we choose with care.
We know these instruments are more than collections of circuits. They carry sounds, habits and memories, and each one has a story before it reaches our bench. Whether you rely on yours every day or are hoping to hear it again after a long silence, our aim is to help you get back to making music.
Patchbay is a three-person studio in Rotterdam dedicated to the care, repair, and resurrection of vintage synthesizers. We started in a small workshop near the Maas, surrounded by oscillators, patch cables, and service manuals, because these instruments deserve more than dusty shelves and hasty fixes. Between us, we have decades of experience in electronics, sound design, and restoration, but we approach every machine with the same curiosity: listen first, trace the signal, understand the history, then bring it back to life. Whether it's a crackly filter, a dead voice card, a drifting oscillator, or a power supply that needs rebuilding, we work carefully, honestly, and with respect for original character. We also advise on maintenance, calibrate tuning and envelopes, and source hard-to-find parts when possible. At Patchbay, repair isn't just about making sound again. It's about keeping these instruments making music for decades to come.
Specs and numbers
| GPT-6.1 Terra Pro | DeepSeek V4.1 Flash | |
|---|---|---|
| Maker | OpenAI | DeepSeek |
| Made in | US | China |
| Released | 26 Oct 2026 | 10 Sep 2026 |
| Price in, per M tokens | $1.00 | $0.045 |
| Price out, per M tokens | $5.00 | $0.50 |
| Context | 1,050,000 tokens | 1,048,576 tokens |
| Weights | closed | open |
| Hacker News points | — | 1,482 |
| Time for the six prompts | 6 min 58 s | 9 min 16 s |
| List price of the six prompts | $0.39 | $0.063 |
DeepSeek V4.1 Flash was cheaper: $0.32 less at list price, and less on each of the 6 prompts. GPT-6.1 Terra Pro was faster: 2 min 18 s less in total, and faster on 3 of the 6 prompts.
In the recording, both Breakout games play.





