I’m joining OpenAI

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Joining OpenAI to bring AI agents to everyone, OpenClaw will stay open and independent through a foundation. I'm excited to join OpenAI and continue building with the community, focusing on making AI accessible to all.

I want to wash my car. The car wash is 50 meters away. Should I walk or drive?

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The user discussed the limitations of language models in understanding context and nuances in questions. They tested various models with a trick question about walking or driving to a 50-meter distant car wash.

Building SQLite with a small swarm

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Implemented distributed system for software engineering with strong module boundaries and high test cadence. Coalescer with Gemini was implemented but ran only once due to performance issues and requires daily cron job for optimal results.

Magnus Carlsen Wins the Freestyle (Chess960) World Championship

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Magnus Carlsen won the 2026 FIDE Freestyle Chess World Championship with a 2.5-1.5 match victory over Fabiano Caruana. Carlsen secured his 21st world title across formats.

picol: A Tcl interpreter in 500 lines of code

https://opengraph.githubassets.com/a4e86eb26072f4976d19aca8a5a6fee923e79bf6ca32842be5d78f4cd68df22b/antirez/picol
Picol is a 500-line C interpreter that supports Tcl-like features, including interpolation, procedures, and variables. It's a simple and understandable example of writing a parser and interpreter, useful for learning how to write a Tcl interpreter.

Expensively Quadratic: The LLM Agent Cost Curve

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Cache reads dominate conversation costs by 50,000 tokens, and by 27,500 tokens, they cost half of the next API call. The cost structure of LLM calls is quadratic, with cache reads increasing as conversation length grows.

Modern CSS Code Snippets: Stop writing CSS like it's 2015

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Old code was often verbose and used multiple style blocks, whereas modern code is concise and uses features like CSS variables, transitions, and media queries. Modern code also tends to use fewer JavaScript libraries and more native functionality.

Arm wants a bigger slice of the chip business

Arm designs are licensed to manufacturers who produce chips, earning Arm upfront fees and royalties. Over 300 billion chips built on Arm designs have been shipped worldwide.

Lost Soviet Moon Lander May Have Been Found

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1,300-year-old world chronicle unearthed in Sinai

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A newly discovered 8th-century Christian chronicle sheds light on the transition from late antiquity to the rise of Islam. The Maronite Chronicle of 713 provides a rare Christian perspective on the Arab-Islamic expansion and early medieval Syriac historiography.

LT6502: A 6502-based homebrew laptop

https://raw.githubusercontent.com/TechPaula/LT6502/main/Images/Assembled_Front_Open.jpeg
You're working on a PC6502 project with a tower of PCBs on your sofa. You've made progress with keyboard integration, compact flash, and display functionality.

Audio is the one area small labs are winning

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Startups like Gradium are outperforming big labs in audio AI research due to their focus, domain expertise, and ability to move quickly. Gradium's Moshi model, with 7B parameters and 2.1T tokens, achieves real-time audio conversations with low latency, outpacing larger models like Llama 3.1.

Designing a 36-key custom keyboard layout (2021)

Once you get into the world of custom mechanical keyboards, then you’ll eventually run into keyboards with what looks like an impossibly small number of keys: At first it may seem there is no good reason to build a keyboard like this, other than for aesthetic purposes or bragging rights. However, there are valid arguments to be made for reducing the number of keys on a standard keyboard. If ...

Show HN: Solving Sudoku reasoning via Energy Geometric models

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A new Sudoku solver is 40,128 times faster than Kona 1.0, solving 270,000 puzzles per second. It uses a curvature-guided GPU execution strategy for constraint satisfaction problems.

I gave Claude access to my pen plotter

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The user, Claude, was asked to draw a self-portrait using a pen plotter and a sheet of paper, thinking about what it is, what it can do, and how to express it. Claude created two drawings, the first being a layered, branching structure and the second a single spiral that represents its process unfolding, with the second drawing being preferred as it better captures the feeling of being Claude.

JavaScript-heavy approaches are not compatible with long-term performance goals

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The author argues that modern web development approaches, particularly those relying on JavaScript-heavy frameworks like React, often lead to performance issues and are not as developer-friendly as claimed. To mitigate these problems, the author suggests defining a performance budget, choosing a suitable architecture and tech stack, setting up code splitting and bundle size tracking, and ...

Show HN: Microgpt is a GPT you can visualize in the browser

A model generates names by learning from training data, using attention heads and multilayer perceptrons to focus on input aspects and relationships. It uses gradient descent and entropy to adjust weights, allowing it to learn patterns and generate names with varying levels of complexity.

Databases should contain their own Metadata – Use SQL Everywhere

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Floe database provides system views for querying metadata, allowing users to answer questions about their data model and database. This feature enables users to write SQL queries to diagnose issues and gain insights into their database, making it a powerful diagnostic interface.

EU bans the destruction of unsold apparel, clothing, accessories and footwear

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The European Commission adopted new measures to prevent unsold apparel destruction, cutting waste and emissions. Companies must disclose unsold products and ban destruction by 2027, with derogations for safety reasons.

Real-time PathTracing with global illumination in WebGL

https://erichlof.github.io/THREE.js-PathTracing-Renderer/readme-Images/measured.jpg
The user describes a path tracing library built on top of Three.js WebGL framework, showcasing various demos including geometry, ocean, sky, billiard table, Cornell Box, volumetric rendering, water, light shaft, terrain, and more, all rendered in real-time at 30-60 FPS on any device. The library also features advanced techniques such as quadric geometry, constructive solid geometry, and ...

Error payloads in Zig

Error payloads in Zig are handled using union(enum)-based Diagnostics types with special methods for code bloat reduction. The withContext method is used to set a payload while returning an error, and diag.call is used to call functions with error handling and payload copying.

Pocketblue – Fedora Atomic for mobile devices

https://opengraph.githubassets.com/d7c4d5187a2cd9093137bd7e3b8cadf4fdb9235d0d7508ad501a19df5c1ae77c/pocketblue/pocketblue
This is a work-in-progress. During the installation process all data on your device will be wiped. Use at your own risk.

Gwtar: A static efficient single-file HTML format

A new file format called Gwtar is introduced to solve the problem of archiving large HTML pages, which is difficult because it needs to be static, single, and efficient. Gwtar achieves all three properties by using a combination of HTML, JavaScript, and a tarball to store assets, allowing for lazy-loading and selective downloading of assets.

GNU Pies – Program Invocation and Execution Supervisor

https://www.gnu.org.ua/graphics/gnu-head-sm.jpg
Pies is a utility that starts and controls external programs, restarting them if they terminate. It can be configured to perform various actions upon termination, including sending mail notifications.

I Love Board Games: A Personal Obsession Explained by Psychology

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The author, a former casual board game player, rediscovered his passion for board games two years ago and has since become obsessed, buying 30 games in 18 months. He attributes this to the psychological appeal of modern board games, which offer a unique combination of tactile experience, social interaction, and low-stakes competition.

Show HN: Knock-Knock.net – Visualizing the bots knocking on my server's door

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Knock-knock.net visualizes bot traffic on the internet as "background radiation." It shows real-time bot activity and historic stats on attempted usernames and passwords.

How long do job postings stay open?

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Job postings typically stay open for 20-30 days, but some categories like Retail and Food & Hospitality stay open longer. Applying within the first 1-2 weeks is a strong window for many professional roles, but earlier is better for roles that fill quickly.

Amazon's Ring and Google's Nest reveal the severity of U.S. surveillance state

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Amazon's Ring ad sparked a backlash over its "Search Party" feature, which links cameras to form a neighborhood-wide surveillance dragnet. The incident highlights growing concerns over the US surveillance state and the erosion of individual privacy.

Transforming a Clojure Database into a Library with GraalVM Native Image and FFI

ChronDB is a time-traveling database that was converted to run embedded in multiple languages using GraalVM Native Image. This allows ChronDB to be used with languages like Rust, Python, and Java, with a clean separation of concerns and efficient cross-language boundaries.

Editor's Note: Retraction of article containing fabricated quotations

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Ars Technica published fabricated AI-generated quotations attributed to a source without permission, violating their standards and policy. The incident appears isolated, but the publication regrets the failure and apologized to readers and the falsely quoted individual.