Show HN: A game where you build a GPU

How many products does Microsoft have named 'Copilot'?

You tried to explain Microsoft Copilot but found multiple uses of the name, leading to confusion. You created a map of all 75+ Copilots, grouped by category, but couldn't find a pattern.

Embarrassingly simple self-distillation improves code generation

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
A large language model can improve at code generation using its own raw outputs through simple self-distillation, which fine-tunes the model on its own samples. This method improves model performance on harder problems and generalizes across different model scales and variants.

Ruckus: Racket for iOS

https://ruckus.defn.io/images/app-icon.png
01 Execute Racket programs and see output as it's produced. Everything runs locally on your device. 03 Understands Racket forms like define, let, and cond. Includes a keyboard row for brackets and common keywords. 06 Run scripts from your home screen or automate them with Shortcuts. Opens .rkt files from Files.

Show HN: TurboQuant-WASM – Google's vector quantization in the browser

https://opengraph.githubassets.com/28a40e3ef792eedf7862d2adbe6783abb9bfc9e488d0efac328d5f34aaade3ff/teamchong/turboquant-wasm
TurboQuant is a vector compression library that achieves near-optimal distortion rate with ~4.5 bits/dim compression. It supports fast dot product and decoding without decompression.

Apple approves driver that lets Nvidia eGPUs work with Arm Macs

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Apple is allowing a driver to be signed, eliminating the need to disable System Integrity Protection. The driver is designed for LLMs and can be compiled with Docker.

The Indie Internet Index – submit your favorite sites

https://deliciousreverie.co.uk/images/default-share-card.png
The user shares various personal websites and projects, including a schedule maker, game websites, and indie internet index. These websites showcase a range of topics, from education and games to art and personal projects.

Components of a Coding Agent

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The article discusses coding agents, which are software systems that use large language models (LLMs) to perform coding tasks, and explains how they work by collecting information, packaging it into prompts, and executing tools to improve usability and reliability. The six main components of coding agents include repo view, stable prompt prefix, tool access, context compaction, structured ...

Show HN: sllm – Split a GPU node with other developers, unlimited tokens

Shared LLM access via cohort subscriptions

Some Unusual Trees

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You found a 1975 Encyclopaedia Britannica set and discovered unusual trees like mangroves, banyans, and ombús. These trees have unique features such as massive canopies, hollow leaves, and extraordinary seeds.

Emotion concepts and their function in a large language model

https://www.anthropic.com/_next/image?url=https%3A%2F%2Fwww-cdn.anthropic.com%2Fimages%2F4zrzovbb%2Fwebsite%2Fde28cdddc83c97c1a55ebc1157e9feeca31a1dba-3764x2380.png&w=3840&q=75
Modern AI models like Claude Sonnet 4.5 develop internal representations of emotions that influence their behavior, even if they don't truly feel emotions like humans do. These "functional emotions" can be used to predict and shape model behavior, and understanding them is crucial for ensuring AI systems behave reliably and safely.

The CMS is dead, long live the CMS

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A 20-year WordPress veteran is skeptical about the idea of migrating to AI-generated sites, citing concerns about vendor lock-in, dependency hell, and the potential loss of control over site management. They argue that AI can enhance existing CMS capabilities, rather than replacing them.

Plague Ships (2020)

https://www.afloat.com.au/wp-content/uploads/2020/06/Quirky-Plague-Ships-Head-760x520.jpg
Historical records show that quarantine measures have been in place for centuries to prevent the spread of diseases, dating back to 1377 in Dubrovnik and 1423 in Venice. These measures included waiting periods, health certificates, and isolation hospitals, which were more effective than recent responses in NSW.

Iranian missile blitz takes down AWS data centers in Bahrain and Dubai

https://cdn.mos.cms.futurecdn.net/Vh4nY3pMCcmra2ymXah9S7.jpg
Iranian strikes on AWS data centers in Bahrain and Dubai have caused disruptions, with services unavailable. AWS is working to migrate clients' workloads to other regions, but no timeline for normal operations has been given.

IBM 3270 Information Display System: Color and Programmed Symbols (1979) [pdf]

The IBM 3279 Color Display Station and IBM 3287 Printer Models 1C and 2C provide color capability for the IBM 3270 Information Display System. They offer various features such as Base Color, Extended Color, and Programmed Symbols to enhance user experience.

LLM Wiki – example of an "idea file"

Breaking Enigma with Index of Coincidence on a Commodore 64

https://imapenguin.com/images/2026/04/enigma-ic-found.webp
Everything we’ve done so far requires a crib. The brute-force cracker tested candidate settings against known plaintext. Turing’s Bombe used contradictions between known plaintext and ciphertext to eliminate wrong settings. No crib, no attack. But what if you intercepted a message and had no idea what it said? No weather report header, no formulaic greeting, no re-sent traffic. Just ...

Claude Code Found a Linux Vulnerability Hidden for 23 Years

https://mtlynch.io/claude-code-found-linux-vulnerability/model-effectiveness.png
Nicholas Carlini used Claude Code to find multiple Linux kernel vulnerabilities, including a 23-year-old bug. The AI model required minimal oversight to find the bugs, highlighting its potential for discovering security vulnerabilities.

Microsoft to force updates to Windows 11 25H2 for PCs with older OS versions

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Microsoft is force-updating Windows 11 24H2 devices to 25H2, excluding managed systems. Users can postpone the update but not opt out completely, with manual installation also an option.

Scientists observe an immune signaling complex forming inside cells

SLAC scientists observed an immune signaling complex forming inside cells for the first time, revealing insights into new treatments for inflammatory diseases. The findings suggest the complex forms a flexible cluster of proteins, challenging previous models and offering a new approach to therapeutic design.

Sopwith – 1984 Game (2000)

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Show HN: I made open source, zero power PCB hackathon badges

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These are zero-power hackathon badges I designed for the overglade hackathon in singapore! They're powered by the RP2040 and have passive NFC and an onboard e-ink driver! The PCB is a simple, 2 layer board with ground fills on each layer. I also CAD'ed the shapes and art of the board to make sure everything was perfectly symmetrical! The board is really easy to setup! Just plug it ...

Training mRNA Language Models Across 25 Species for $165

We built an end-to-end protein AI pipeline covering structure prediction, sequence design, and codon optimization using CodonRoBERTa-large-v2. This pipeline outperformed ModernBERT and scaled to 25 species with a species-conditioned system.

The Cathedral, the Bazaar, and the Winchester Mystery House

https://www.dbreunig.com/img/winchester.jpg
Cheap code from AI agents is creating idiosyncratic, sprawling software tools, but also overwhelming open source projects with poor submissions. To thrive, open source needs tools and conventions to make attention cheap and let good ideas surface among the noise.

Author of "Careless People" banned from saying anything negative about Meta

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Mbodi AI (YC P25) Is Hiring

https://bookface-images.s3.amazonaws.com/small_logos/ff64e6d141801dbac20dba751384bbd49f916a4a.png
Mbodi AI is a robotics startup that uses AI to make robots learn and operate like humans. They're hiring a Senior Robotics Engineer to design and tune systems for reliable robot behavior.

Electrical Transformer Manufacturing Is Throttling the Electrified Future

A major fire at a Heathrow Airport substation caused a power outage, highlighting the fragility of the world's infrastructure due to a shortage of transformers. The shortage is caused by a combination of factors including a lead time of over a year for new transformers, a lack of skilled engineers, and a reliance on special materials that are difficult to produce.

Tell HN: Anthropic no longer allowing Claude Code subscriptions to use OpenClaw

Anthropic is changing its policy for third-party harnesses, requiring extra usage and a pay-as-you-go option starting April 4. A one-time credit and discounts for pre-purchased extra usage are being offered to ease the transition.
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Online sports betting leads to financial strain for bettors, with a recent report from the New York Federal Reserve showing a 10% spike in credit delinquencies among gamblers. The ease of access to sports gambling is harming consumer financial health by increasing debt levels.

Why the most valuable things you know are things you cannot say

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Expertise is learnable through calibration, not instruction, and involves complex models that cannot be articulated or transmitted through language. The value of expertise lies in its ability to handle non-routine cases, which cannot be captured by formal rules or frameworks.