Claude Fable 5.1 and Claude Mythos 5.1

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Claude Fable 5.1 and Claude Mythos 5.1 are AI models with different levels of safeguards, available for general use and vetted individuals/organizations respectively, offering improved performance and capabilities in various domains such as scientific research, cybersecurity, and life sciences.

The Emergent Symbolic Structure of Artificial Neural Networks

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Modern AI systems excel in domains they seem poorly suited for, despite being based on continuous vector representations. Researchers propose that these vectors implicitly realize symbolic structure, allowing them to achieve impressive performance in cognitive domains.

How accurate have Ed Zitron's AI skeptic predictions been?

True Rate of Unemployment

The True Rate of Unemployment measures the US labor force's financial well-being by tracking those without a full-time job or earning a living wage. It provides policymakers with a more accurate measure to shape economic policy and fund communities equitably.

Salad Theory

https://saladtheory.github.io/img/salads.png
The office debated the definition of a salad, concluding that all edible foods are salads. They proposed various definitions but ultimately settled on one that considers a food to be a salad if it has multiple ingredients and is well-mixed.

WebFPGA

Welcome! Please read our Kickstarter page for the project's information and scope. Purchase a board below and use our Web IDE to program your FPGA device!

FBI Probes Service Selling 153M+ Drivers Licenses

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A new identity theft service on the dark web is selling digital scans of over 153 million US and Canadian driver's licenses, sourced from a breach at an identity verification company. The FBI has launched an investigation into the source of the images.

My local model setup on an M4 Pro Mac Mini

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The author runs a local LLM server on their M4 Pro Mac mini with 48GB of RAM, handling tasks from chat queries to coding and agent workflows. This setup provides cost predictability, faster responses, offline capability, and no rate limits compared to cloud APIs.

Introducing Ad Blocker for Firefox on iOS

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Ad Blocker for Firefox on iOS blocks third-party ads and trackers, reducing clutter and distractions while browsing. It's an optional feature that works alongside existing privacy protections in the browser.

Show HN: Weedout – Safari extension that hides YouTube AI-labeled videos

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Field Cam Weedout is a one-time purchase app for macOS 13+ that removes weeds from real feeds in seconds. It uses YouTube's "Made with AI" badge to detect and remove weeds accurately without false accusations or guessing.

Sonic Pi

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Sonic Pi is a new kind of instrument for a new generation of musicians. It is simple to learn, powerful enough for live performances and free to download.

The efficient frontier of LLM inference

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The efficient frontier in AI refers to the optimal tradeoff between cost and capabilities for models, with techniques like quantization, distillation, and pruning making tradeoffs between latency and throughput. Techniques can target specific points on the frontier or push it outwards to improve overall efficiency.

The ChatGPT/Codex app bundles a full copy of LibreOffice

The user found 1.7GB of data in their ~/.cache/ folder from the ChatGPT app, including full Python and Node.js installations, native binaries for various tools, and skills that tell Codex how to use them. This suggests a large cache of dependencies used by the app.

Launch HN: Nori Robotics (YC S26) – A low-cost humanoid robot for development

https://www.norirobotics.com/_next/image?url=%2Fimages%2Fspecs%2Farm.2f514eeb.png&w=3840&q=75
NORI A3 — an affordable bimanual robot for home and office. Made in the US, shipping fall 2026. $1,688.

Movie Scene Map – 13,312 films, series, games, anime and manga

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Movie Scene Map is a free interactive map of 15,535 real filming locations in 166 countries. It uses open data from Wikidata and Wikipedia to show where films, TV series, video games, anime, and manga were shot or set.

Path to Astra: critical capabilities and frontier safeguards

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Astra, a model with critical cybersecurity capabilities, has been evaluated and deemed safe for release after strengthening its safeguards against cyber misuse and unauthorized actions. The model's advanced capabilities include identifying and developing functional zero-day exploits in hardened systems without human intervention.

Forgotten History of Small Nuclear Reactors (2015)

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Small nuclear reactors are being touted as a solution to revive the nuclear industry, but their history shows they were not economical or easy to build and operate. Economies of scale have always been a key factor in the success of large nuclear reactors.

Refurbishing a Tektronix TDS7104 Oscilloscope

https://tomverbeure.github.io/assets/tds7104/tds7104_in_car.jpg
The author purchased a used Tektronix TDS7104 oscilloscope at the Silicon Valley Flea Market for $300, which is significantly cheaper than its market value. The scope was in excellent cosmetic shape but had some issues with booting up and displaying waveforms due to a dead CMOS battery and dim LCD screen.

Show HN: HN Match Maker – Matching "Who Wants to Be Hired?" With "Who's Hiring?"

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AI-powered matchmaking between “Who is Hiring” job postings and “Who Wants to Be Hired” candidates. Every match is pre-scored and broken down by signals. Data sourced from Who is Hiring and Who Wants to Be Hired threads. Match scores are pre-computed using skill, domain, seniority, and salary overlap.

Ambient CSS v3 – Blender meets CSS

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Define a light source, and every shadow, highlight and surface gradient follows from it. Calibrated against Blender raytraces — rendered with box-shadow.

The creator of Jujutsu has joined ERSC

East River Source Control has appointed Martin von Zweigbergk as chief technology officer to lead engineering on its next generation version control platforms. He will oversee the development of tools to manage exponentially increasing source code management needs in the AI-driven software industry.

Show HN: Running 104GB Qwen3.8-Flash-Next on 48GB Mac with at ~12 tok/s

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The Qwen3.8-Flash-Next model requires a 512 GB Mac with at least 4 GB of RAM to run, and can be installed on Apple Silicon devices with macOS 14+. The download is around 103.8 GB and takes several hours over slow connections.

Top Web Design Styles of 1993

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The author is introducing the concept of Interface Design studies to new students, highlighting its importance and relevance in today's digital world. The main focus is on explaining why studying interface design is crucial, despite many students being drawn to graphic design or web development.

Ask HN: Who is hiring? (September 2026)

I'll post job openings for remote work with the company's name, location, and a brief description of their business.

The Overton Window of Food

Fast food uses ice to stretch soda, not cut costs. Soda is cheap, while ice is more expensive.

Atlas: A World Model for Spatial Intelligence

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World Labs introduces Atlas, a next-generation world model that can generate, reconstruct and simulate any possible world. It is an omni model that operates on text, images, video and 3D data.

Solving the Flat Cube

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The Flat Cube puzzle requires at least 27 moves to solve, regardless of whether the Devil chooses the initial or target tiling. This is proven through two different methods, one involving a tray of cubes and another using beads on an abacus wire.

Building an interactive instrument for a one-of-a-kind festival

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The Eaux Claires festival, founded by Bon Iver's Justin Vernon, is returning in 2026 with a custom instrument designed by the author. The instrument features a unique chime system and receipt-based recording mechanism that allows attendees to contribute to the music.

Building Autonomous Goal Loops That Deliver

An agent loop harness needs a reproducible starting point, real demand, and deterministic floor to test feature capabilities. It also requires an authority model to prevent the loop from optimizing bad measures or grading its own repairs.

Play Store blocks AuroraStore, hurting GrapheneOS users

Aurora Store returns a "Server busy, please try again later" error when installing applications via an anonymous account on Fairphone 5 with Android 16. The issue persists despite clearing cache, refreshing the account, and restarting the device.