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Xing 4.0 vs Nemotron 3 Ultra

5 prompts both ran·Specs and numbers·Change models

Xing 4.0 took 25 min 32 s and was free at list price, Nemotron 3 Ultra took 12 min 32 s and $0.13 at list price. Xing 4.0 took 2.0× as long.

Xing 4.0

XingChen · free route

Nemotron 3 Ultra

NVIDIA · $2.40/M out · free route · 48 HN pts

Pelican

Generate an SVG of a pelican riding a bicycle

Xing 4.0's SVG for the "Pelican riding a bicycle" prompt

Xing 4.0

1 min 42 sfree7.5k tokensAPI
Nemotron 3 Ultra's SVG for the "Pelican riding a bicycle" prompt

Nemotron 3 Ultra

56 s$0.0114.7k 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 Xing 4.0's page for the "Wristwatch that shows the current time" prompt

Xing 4.0

7 min 41 sfree30k tokensAPI
Still of Nemotron 3 Ultra's page for the "Wristwatch that shows the current time" prompt

Nemotron 3 Ultra

2 min 56 s$0.02912k 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 Xing 4.0's page for the "Landing page for a cargo bike workshop" prompt

Blank first frame. Press Run.

Xing 4.0

4 min 2 sfree19k tokensAPI
Still of Nemotron 3 Ultra's page for the "Landing page for a cargo bike workshop" prompt

Nemotron 3 Ultra

4 min 25 s$0.05824k 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 Xing 4.0's page for the "Playable Breakout" prompt

Xing 4.0

11 min 5 sfree43k tokensAPI
Still of Nemotron 3 Ultra's page for the "Playable Breakout" prompt

Nemotron 3 Ultra

3 min 39 s$0.03314k 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 compact, three-person workshop rooted in the dynamic streets of Rotterdam, born from a shared reverence for analog sound. Our team shares an unwavering dedication to vintage synthesizers, viewing each oscillator, filter, and routing cable as a vital piece of sonic history waiting to be restored. Whether diagnosing a failing voltage regulator or carefully retrofitting obsolete components, we take immense pride in bringing classic instruments back to their full potential. In our studio, repairing isn't just a technical service—it is a shared passion among friends who believe the past deserves to keep playing. We meticulously diagnose and revive legacy synths, ensuring the iconic sounds of yesterday continue shaping today’s electronic music. Bring us your dented, broken machines, and let us help you reconnect them with the rich, unmistakable sounds they were always meant to make. Every patch, every knob, every fleeting tone depends on the work we do here.

Xing 4.0

63 sfree6.8k tokensAPI

Patchbay began in a narrow workshop on the edge of Rotterdam’s Noord district, where the hum of aging oscillators meets the rhythm of the city’s canals. Founded by three synth enthusiasts — a former studio engineer, a circuit designer, and a musician who still plays the same Juno‑106 he bought in 1986 — the studio grew from late‑night repair sessions into a dedicated space for restoring the instruments that shaped electronic music’s golden era. Every unit that passes through our bench is treated with the same reverence we give a first‑press vinyl: capacitors are swapped, contacts cleaned, and calibration traced back to original service manuals. We don’t just fix synthesizers; we listen to their history, understand their quirks, and return them to the stage or studio ready to inspire the next generation of sound. Patchbay is small, intentional, and built on the belief that vintage gear deserves a future as vivid as its past.

Nemotron 3 Ultra

36 s$0.0031.1k tokensAPI

Specs and numbers

Xing 4.0Nemotron 3 Ultra
MakerXingChenNVIDIA
Made inChinaUS
Released16 Oct 20264 Jun 2026
Price in, per M tokensfree route (list $0/M)free route (list $0.60/M)
Price out, per M tokensfree route (list $0/M)free route (list $2.40/M)
Context262,144 tokens262,144 tokens
Weightsopenopen
Hacker News points—48
Time for the five prompts25 min 32 s12 min 32 s
List price of the five promptsfree$0.13

Xing 4.0 was free at list price; Nemotron 3 Ultra cost $0.13. Nemotron 3 Ultra was faster: 13 min less in total, and faster on 4 of the 5 prompts.

In the recording, Xing 4.0's Breakout game plays; Nemotron 3 Ultra's loads but doesn't start. Xing 4.0's landing page showed a blank first frame when the still was taken. Xing 4.0 has no logo: doesn’t draw (an SVG file without the SVG namespace, which browsers draw as an empty box).

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