Hacker News
19-Year-Old Receives First Wireless Bionic Hands Controlled by Thought
Article URL: https://www.utubepublisher.in/2025/04/worlds-first-mind-controlled-wireless-bionic-hands.html
Comments URL: https://news.ycombinator.com/item?id=43772034
Points: 1
# Comments: 0
New AI Training Method Lets Models Teach Themselves
Article URL: https://www.implicator.ai/new-ai-training-method-lets-models-teach-themselves/
Comments URL: https://news.ycombinator.com/item?id=43772030
Points: 1
# Comments: 1
Show HN: Text Battle – AI-simulated fights, daily leagues (Elo Ranking)
I built Text Battle, a lightweight web game where you:
- Write a character prompt in ≤ 100 chars (e.g. "A sarcastic cyber-ninja with a plasma katana").
- Earn Elo and appear in daily or unlimited-season leagues.
Feedback I’m looking for:
- Whether the 60 s cooldown feels fair vs. annoying.
- Balance of Elo gains between free and paid matches.
- I added micro-transactions because LLM costs are non-trivial; any tips on model/infra optimization to keep it free-to-play are welcome.
Auth: Email, Google, Supabase Anonymous Sign-Ins
Source / tech stack: React + Supabase + Gemini API
Thanks in advance—happy to answer questions!
Comments URL: https://news.ycombinator.com/item?id=43772029
Points: 1
# Comments: 0
Meta 'hastily' changed mod policy without regard to impact, says oversight board
Show HN: Tokenkit – Convert LLMs to new tokenizers (incl byte-level Llama/Gemma)
Hi HN!
I’ve been working on transferring LLMs across tokenizers using a new method called ALM (details in our paper [1]). It distills a model trained with one tokenizer into a version using another, enabling things like converting subword models into byte-level ones much more effectively than what was possible before.
To make this easy to use, I released tokenkit, a library implementing ALM and other tokenizer transfer methods: https://github.com/bminixhofer/tokenkit.
As a demo, I used ALM to create two byte-level instruction-tuned models:
- https://huggingface.co/benjamin/Gemma2-2B-IT-Byte
- https://huggingface.co/benjamin/Llama3-2-3B-IT-Byte
Even though the distillation phase is very short (just 1.2B bytes ≈ 330M subword tokens), the models perform competitively (for example 57.0% MMLU of the byte-level Llama vs. 62.4% MMLU of the original Llama3-3B-Instruct).
This approach opens up an interesting direction: we can potentially keep subword tokenization for pretraining (to still squeeze as much text into the model in as little time as possible), but then change to a more user-friendly tokenization afterwards.
These models aren’t yet optimized for efficiency, but if you would add self-speculative decoding plus a BLT/DTP-style hierarchical architecture and/or linearized attention, they might also be able to replace subword-based models when speed matters.
If you're interested in training your own models, the guide on tokenizer transfer via tokenkit [2] should make it easy. The model cards of the transfers above also contain the exact command used to train them. I’ve been training on fairly limited hardware, so effective transfer is possible even in a (near) consumer-grade setup.
[1]: https://arxiv.org/abs/2503.20083
[2]: https://github.com/bminixhofer/tokenkit/blob/main/docs/token...
Comments URL: https://news.ycombinator.com/item?id=43772015
Points: 1
# Comments: 0
Berlin DeepTech Landscape
Article URL: https://startup-map.berlin/lists/53190
Comments URL: https://news.ycombinator.com/item?id=43772012
Points: 3
# Comments: 0
A Biofilm's Shape Emerges from Cellular Geometry
Article URL: https://www.quantamagazine.org/how-a-biofilms-strange-shape-emerges-from-cellular-geometry-20250421/
Comments URL: https://news.ycombinator.com/item?id=43772000
Points: 1
# Comments: 0
Tesla profits drop 71% on weak sales and anti-Elon Musk sentiment
Article URL: https://techcrunch.com/2025/04/22/tesla-profits-drop-71-on-weak-sales-and-anti-elon-musk-sentiment/
Comments URL: https://news.ycombinator.com/item?id=43771965
Points: 4
# Comments: 0
BenefíCIOs do Morango para a Pele: Beleza e Vitaminas
Article URL: https://sabordocampo.com/beneficios-do-morango-para-a-pele/
Comments URL: https://news.ycombinator.com/item?id=43771962
Points: 1
# Comments: 1
Why Is Everyone in My Meeting?
Article URL: https://robert.winter.ink/why-is-everyone-in-my-meeting/
Comments URL: https://news.ycombinator.com/item?id=43771939
Points: 2
# Comments: 0
Show HN: Traditional Japanese colors in a browser extension
Hi HN. I made a Chrome extension[1] that generates color palettes using traditional Japanese colors[2] based on any color you input.
These colors have been a bit of a recent obsession of mine, ever since I came across a company[3] that publishes a free color reference including traditional sets for Japan, China, and France, while on a walk.
Since then, I’ve acquired several books on the topic, had conversations with people who have been interested in this for far longer than I have, and received a grant from Adobe[4] — which I recommend applying for if you’re working on something creative.
The colors were historically used in textiles and different sources list different colors. Some include modern additions while others are more conservative.
I’ve been using the app daily for user interfaces and various creative projects. My hope is that you might get some use out of it too.
Here’s what the output looks like for Y Combinator’s orange:
https://drive.google.com/drive/folders/1VICRkO_7Z1B05KnnzF0c...
It’s nighttime for me so if you have any questions, I’ll be answering in the morning.
[1] https://irorgb.com/ [2] https://en.wikipedia.org/wiki/Traditional_colors_of_Japan [3] https://www.dic-graphics.co.jp/en/products/dcguide/index.htm... [4] https://developer.adobe.com/fund-for-design/
Comments URL: https://news.ycombinator.com/item?id=43771937
Points: 1
# Comments: 0
I couldn't sleep over bad grammar at work–so I built this Chrome extension
Article URL: https://chromewebstore.google.com/detail/typemate-fix-grammar-ever/ehgcmamfghkhiinhnhhhgjilpfokaokh
Comments URL: https://news.ycombinator.com/item?id=43771934
Points: 1
# Comments: 1
Three ways to cool Earth by pulling carbon from the sky
Article URL: https://www.nature.com/articles/d41586-025-01233-6
Comments URL: https://news.ycombinator.com/item?id=43771920
Points: 2
# Comments: 0
Hydrogen generation and organic synthesis explored through new database
Article URL: https://phys.org/news/2025-04-harnessing-photocatalysis-hydrogen-generation-synthesis.html
Comments URL: https://news.ycombinator.com/item?id=43771901
Points: 1
# Comments: 0
A Marketplace for Made in America CNC machining, PCB fabrication and 3D printing
Article URL: https://vendra-marketplace.io/
Comments URL: https://news.ycombinator.com/item?id=43771889
Points: 1
# Comments: 1
5th Circuit Lets AT&T Off the Hook for Major Location Data Privacy Violations
Crypto ally Paul Atkins sworn in as SEC Chair
Article URL: https://www.coindesk.com/policy/2025/04/22/crypto-ally-paul-atkins-sworn-in-to-replace-gary-gensler-atop-u-s-sec
Comments URL: https://news.ycombinator.com/item?id=43771416
Points: 1
# Comments: 0
Kworkflow tool talk from FOSDEM 2025
Article URL: https://melissawen.github.io/blog/2025/04/22/fosdem-2025-kernel-devroom-kworkflow-talk
Comments URL: https://news.ycombinator.com/item?id=43771413
Points: 1
# Comments: 0
Max is going to make you pay for people you share your password with
Article URL: https://www.theverge.com/news/653778/max-password-sharing-extra-member-add-on
Comments URL: https://news.ycombinator.com/item?id=43771400
Points: 1
# Comments: 0
Ask HN: What is going on with cloudflare?
I hoped after the shitstorm cloudflare received a few months ago, about their sales tactics and treating their sales team (the viral firing tikok video, extortion attempts of customers big enough to buy enterprise plans), things would be improving but i don't see any significant changes and am growingly concerned about the state of the company.
While the core engineering side seems to still develop the platform into new heights and also have found a very convincing AI and general computing strategy (eg. the upcoming container platform), their billing platform is faulty for 6 months now (https://www.cloudflarestatus.com/incidents/gnl2dp153485) with the salesforce based ticket system broken for weeks sending most filed tickets into a black void.
Suspiciously plan upgrades seem to be less affected compared to plan downgrades and cancellations, is this a pure evil play of scale?
Comments URL: https://news.ycombinator.com/item?id=43771392
Points: 1
# Comments: 0