Kimi K3.1 Pro vs Claude Haiku 5.5
Kimi K3.1 Pro took 32 min 17 s and $1.27 at list price, Claude Haiku 5.5 took 4 min 43 s and $0.035 at list price. Kimi K3.1 Pro took 6.8× as long and cost 36× as much.
Kimi K3.1 Pro
Moonshot AI · $10.00/M out · 1,168 HN pts
Claude Haiku 5.5
Anthropic · $0.50/M out · 1,071 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 devoted to keeping vintage synthesizers alive, playable, and full of character. We work on instruments that have spent decades in studios, bedrooms, and tour cases, and we believe each one deserves more than a quick fix. From drifting oscillators and noisy sliders to tired keybeds and mysterious faults, we take the time to listen, diagnose, and repair with care.
Our approach combines patient troubleshooting, period-correct components where possible, and a deep respect for the original sound. We do not believe in erasing an instrument’s history; we preserve the quirks that make it worth loving. Whether your synthesizer needs a full overhaul or a little help getting back on stage, you will always know who is working on it and why. Patchbay exists for the joy of switching on an old machine and hearing it come back to life.
Patchbay is a three-person studio in Rotterdam, and we spend our days inside vintage synthesizers. We are repair technicians first: we open the cases, replace the leaking capacitors, re-tune the oscillators that have drifted out of pitch, and bring back the filters that went silent decades ago. Our bench is crowded with service manuals, spare chips, and a soldering station that has seen more Moog panels than we can count. We started the studio because we kept meeting musicians whose favourite instruments sat unused in cupboards, not because they were broken beyond saving but because nobody nearby knew how to fix them. We still believe most of these machines can be made to sing again, and we would rather spend an afternoon finding the one bad resistor than see another good synth end up in a skip.
Specs and numbers
| Kimi K3.1 Pro | Claude Haiku 5.5 | |
|---|---|---|
| Maker | Moonshot AI | Anthropic |
| Made in | China | US |
| Released | 23 Oct 2026 | 7 Oct 2026 |
| Price in, per M tokens | $2.00 | $0.10 |
| Price out, per M tokens | $10.00 | $0.50 |
| Context | 1,048,576 tokens | 1,000,000 tokens |
| Weights | closed | closed |
| Hacker News points | 1,168 | 1,071 |
| Time for the six prompts | 32 min 17 s | 4 min 43 s |
| List price of the six prompts | $1.27 | $0.035 |
Claude Haiku 5.5 was cheaper: $1.23 less at list price, and less on each of the 6 prompts. Claude Haiku 5.5 was faster: 27 min 34 s less in total, and faster on each of the 6 prompts.
In the recording, both Breakout games play.
Rebuild this screen experiment: Kimi K3.1 Pro's rebuild matched the screenshot at 87%; Claude Haiku 5.5 was not in it. Tea Garden experiment: Kimi K3.1 Pro's game passed 5 of 5 checks; Claude Haiku 5.5 was not in it.