• Updated 31 Oct, 14:35 UTC
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GPT-6.1 Terra Pro vs DeepSeek V4.1 Flash

6 prompts both ran·Specs and numbers·Change models

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

GPT-6.1 Terra Pro's SVG for the "Pelican riding a bicycle" prompt

GPT-6.1 Terra Pro

41 s$0.0375.9k tokensAPI
DeepSeek V4.1 Flash's SVG for the "Pelican riding a bicycle" prompt

DeepSeek V4.1 Flash

38 s$0.00613k 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 GPT-6.1 Terra Pro's page for the "Wristwatch that shows the current time" prompt

GPT-6.1 Terra Pro

78 s$0.06911k tokensAPI
Still of DeepSeek V4.1 Flash's page for the "Wristwatch that shows the current time" prompt

DeepSeek V4.1 Flash

3 min 14 s$0.01427k 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 GPT-6.1 Terra Pro's page for the "Landing page for a cargo bike workshop" prompt

GPT-6.1 Terra Pro

2 min 27 s$0.1424k tokensAPI
Still of DeepSeek V4.1 Flash's page for the "Landing page for a cargo bike workshop" prompt

DeepSeek V4.1 Flash

1 min 51 s$0.01938k 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 GPT-6.1 Terra Pro's page for the "Playable Breakout" prompt

GPT-6.1 Terra Pro

1 min 42 s$0.09916k tokensAPI
Still of DeepSeek V4.1 Flash's page for the "Playable Breakout" prompt

DeepSeek V4.1 Flash

2 min 25 s$0.01631k tokensAPI

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

GPT-6.1 Terra Pro's SVG for the "Bookshop logo" prompt

GPT-6.1 Terra Pro

42 s$0.0314.9k tokensAPI
DeepSeek V4.1 Flash's SVG for the "Bookshop logo" prompt

DeepSeek V4.1 Flash

61 s$0.00816k 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.

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.

GPT-6.1 Terra Pro

8 s$0.006827 tokensAPI

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.

DeepSeek V4.1 Flash

7 s<$0.001965 tokensAPI

Specs and numbers

GPT-6.1 Terra ProDeepSeek V4.1 Flash
MakerOpenAIDeepSeek
Made inUSChina
Released26 Oct 202610 Sep 2026
Price in, per M tokens$1.00$0.045
Price out, per M tokens$5.00$0.50
Context1,050,000 tokens1,048,576 tokens
Weightsclosedopen
Hacker News points—1,482
Time for the six prompts6 min 58 s9 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.

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