Claude Sonnet 5

910 marinesebastian 2026-06-30 18:37:20 UTC anthropic.com Llama Share 508

Claude Sonnet 5 is a more agentic AI model that can make plans, use tools, and run autonomously at a lower price than its predecessor. It's available across all plans and offers a safer and more efficient option for developers, with a lower rate of undesirable behaviors and improved performance on tasks like coding and knowledge work.

Claude Code is steganographically marking requests

1470 kirushik 2026-06-30 16:37:20 UTC thereallo.dev Llama Share 417

Developers give coding agents excessive access for productivity, but this also raises security concerns. A tool like Claude Code hides classification signals in system prompts, making it harder to trust its claims of transparency.

Google copybara: moving code between repositories

69 reconnecting 2026-07-01 00:37:20 UTC github.com/google Llama Share 9

Copybara is a tool used internally at Google to transform and move code between repositories, allowing for syncing of confidential and public repositories. It is stateless and supports Git repositories, with experimental support for Mercurial.

Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5

299 Pragmata 2026-07-01 00:37:20 UTC twitter.com/anthropicai Full Share 114

We’ve received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5. We'll begin restoring access tomorrow, and will share an update soon. We’re grateful to our users for their patience, and to everyone who worked with us on redeploying the models.

From brain waves to words: a new path to communication without surgery

116 alok-g 2026-06-30 21:37:20 UTC ai.meta.com Full Share 61

Sorry, something went wrong. We're working on getting this fixed as soon as we can.

Claude Science

380 lebovic 2026-06-30 17:37:20 UTC claude.com Llama Share 124

Claude Science is a public beta app that integrates AI with scientific computing, allowing users to run full analyses on their own infrastructure. It connects to 60+ scientific databases and domain-specific open models, and produces reproducible results with full provenance.

Nano Banana 2 Lite

316 minimaxir 2026-06-30 17:37:20 UTC deepmind.google Llama Share 125

Nano Banana 2 Lite generates and edits images faster and more efficiently, ideal for designers and creators. It provides high-quality images quickly, reducing waiting time and increasing creative flow.

Forestiere Underground Gardens

15 onemoresoop 2026-07-01 01:37:20 UTC en.wikipedia.org Llama Share 1

Baldassare Forestiere built the Forestiere Underground Gardens in Fresno, California over 40 years using hand tools and mules. The gardens feature 65 rooms, skylights, and a variety of plants and trees protected from frost.

Deriving the SVD (Single Value Decomposition) from scratch

14 pcael 2026-07-01 00:37:20 UTC stillthinking.net GoogleT5 Share 0

A linear algebra concept called singular value decomposition (svd) was new to me. it ranks the content by importance, and importance is information, says mathematician dr. rafael sahaguni jirgadiyasuddin ibn taylor, author of'singular values in information theory' he says the concept of singular

Leanstral 1.5

111 vetronauta 2026-06-30 21:37:20 UTC docs.mistral.ai Full Share 21

An updated Lean 4 formal proof engineering model optimised for automated theorem proving and autoformalization. 119B total parameters, 6.5B active.

Hatari – Online Atari ST/STE/TT/Falcon Emulator

39 gregsadetsky 2026-06-30 22:37:20 UTC hatari.frama.io Full Share 3

Hatari - the Atari ST/STE/TT/Falcon emulatorResize canvas Lock/hide mouse pointer

How does a pull-back car work? Illustrated teardown

117 Muhammad523 2026-06-30 20:37:20 UTC mechanical-pencil.com Llama Share 27

A toy car's wind-up mechanism uses a Spiral Spring and gears to store and release energy, allowing it to shoot forward at high speeds. The gear system provides a mechanical advantage, making it easier for kids to wind up the spring with modest force.

I ported Kubernetes to the browser

173 peterdemin 2026-06-30 21:37:20 UTC ngrok.com Llama Share 61

Sam Rose created Webernetes, a browser-based Kubernetes cluster, using LLMs to port 100,000 lines of code from Kubernetes. He reviewed and tested the code to ensure its correctness, and now invites others to use and contribute to the project.

Scaling Laws, Carefully

18 tehnub 2026-06-30 23:37:20 UTC lilianweng.github.io GoogleT5 Share 8

Training loss $l$ decreases predictably as we scale up model size $n$, dataset $d$ and compute $c$. train loss and test loss are positively correlated, and more model parameters can induce a finer partition of the data manifold, argues chinchilla. he says this is because the unique high-quality data is not infinite and we likely have to repeat data during training. more data repetition leads ...

Ante: A new way to blend borrow checking and reference counting

54 g0xA52A2A 2026-06-30 21:37:20 UTC verdagon.dev Llama Share 15

Ante is a work-in-progress language that aims to blend reference counting and borrow checking without run-time crashes. It achieves this through its concept of shape-stability and local uniqueness rules.

CERN bids farewell to the LHC and enters Long Shutdown 3

125 HelloUsername 2026-06-30 18:37:20 UTC home.cern Llama Share 34

The Large Hadron Collider has completed its final physics run and is undergoing a major maintenance and upgrade program, Long Shutdown 3, to prepare for the High-Luminosity LHC. The upgrade will increase the collider's luminosity by a factor of up to ten, enabling precision studies and potentially uncovering new phenomena.

From Julia to Rust: a differentiable tensor stack for scientific computing

8 postflopclarity 2026-07-01 01:37:20 UTC tensor4all.org Prefix Share 0

From Julia to Rust: a differentiable tensor stack for scientific computing in the agentic AI era tenferro-rs is a Rust-native dense tensor stack: linear algebra, PyTorch-style eager autodiff, JAX-style traced transforms, NumPy-style einsum, FFT, extensible operation crates, and explicit CPU/CUDA backends. The first crates are on crates.io as of June 23, 2026 (JST). Most tensor-network code ...

Tokyo has only two barley tea makers, we visited one to see how mugicha is made

83 zdw 2026-06-30 20:37:20 UTC soranews24.com Llama Share 14

Barley tea, or mugicha, is a Japanese drink made from roasted barley grains, not tea leaves. It's brewed from twice-roasted barley grains, sourced from domestic growers, and packaged in tea bags for a refreshing summer drink.

I built a mmWave material classification radar (2025)

146 GL26 2026-06-30 17:37:20 UTC gauthier-lechevalier.com Llama Share 39

The user built a radar that can classify materials, specifically targeting asbestos detection, using a combination of material sciences, wave physics, and neural networks. Due to a lack of funding, the project was stopped after achieving a proof of concept, but the user gained valuable experience in embedded firmware programming, product design, and hardware startup development.

Stroustrup's Rule (2024)

61 bmacho 2026-06-30 20:37:20 UTC buttondown.com Llama Share 10

Logic for Programmers is on sale until Jan 2nd with 40% off. Bjarne Stroustrup's Rule states that beginners need explicit syntax, while experts prefer terse notation.

TabFM: A zero-shot foundation model for tabular data

43 brandonb 2026-06-30 22:37:20 UTC research.google Llama Share 6

TabFM is a foundation model for tabular data classification and regression that uses in-context learning to eliminate manual model training and hyperparameter tuning. It achieves high-quality predictions in a single forward pass, outperforming traditional supervised algorithms.

Building a custom octocopter from scratch with no prior hardware experience

334 noleary 2026-06-30 09:37:20 UTC karolina.mgdubiel.com Llama Share 69

Chris von Csefalvay plans to train a drone to fly with reinforcement learning, focusing on 6 failure classes and simulating motor lag and loop latency. He's using PPO with parallel environments and an asymmetric actor-critic approach to prepare the drone for real-world crashes.

Long Island's decommissioned nuclear power plant

80 mkmk 2026-06-30 20:37:20 UTC nickcarr.com Llama Share 11

The Shoreham Nuclear Power Plant, closed since 1994, is a unique filming location with a massive reactor control room and various industrial spaces. The plant features a 7-foot thick outer containment wall and a primary containment area with a reactor and fuel rod assembly.

Show HN: My 13-year-old built an ant colony tracker

44 abelgvidal 2026-06-30 20:37:20 UTC formicarium.es Llama Share 31

An ant colony management system tracks worker history, statistics, and care. It displays colony status, worker count, and data on a main panel with detailed charts and logs on each colony's page.

Knoppix

262 hoangvmpc 2026-06-30 13:37:20 UTC knopper.net Llama Share 106

KNOPPIX is a bootable Linux system on CD, DVD, or USB with automatic hardware detection and support for various devices. It can be used as a productive desktop system, educational tool, or rescue system without installing anything on a hard disk.

Show HN: C++, Java and C# light-weight-logger

4 PenguineDavid 2026-07-01 01:37:20 UTC github.com/penguinedavid Prefix Share 0

Logger is a lightweight, zero-dependency terminal logging library. Instead of a fixed set of log levels with hard-coded output, it gives you a format-string mini-language. You register named levels at runtime, attach a format string and an ANSI colour to each, and call log() / Log() with a level name and message. The parser walks the format string one character at a time, expanding ...

Reading the internals of Postgres: Database cluster, databases, and tables

58 buraksen 2026-06-30 18:37:20 UTC buraksen.dev Llama Share 1

The user is studying Postgres Internals and has been documenting their notes on database clusters, database objects, system catalogs, and storage layouts. They have explored how Postgres stores data in heap tables, uses TOAST tables for oversized values, and accesses data through line pointers and tuple headers.

Have you restarted your computer this week?

120 surprisetalk 2026-06-30 14:37:20 UTC taonaw.com Llama Share 221

The user enjoys manually restarting their Mac on Saturdays, closing all windows and ignoring unsaved work warnings, for a clean desktop environment. This process allows them to disconnect from work and resolve potential computer issues.

Hengefinder

23 bookofjoe 2026-06-30 22:37:20 UTC hengefinder.com Llama Share 10

Hengefinder is an app that finds perfect sun or moon alignments with city streets and buildings worldwide. It uses astronomical calculations and road data to deliver instant results for sunrise, sunset, moonrise, and moonset.

Memoirs of Extraordinary Popular Delusions and the Madness of Crowds (1852)

172 lstodd 2026-06-30 13:37:20 UTC gutenberg.org Llama Share 54

Charles Mackay's 1841 book "Memoirs of Extraordinary Popular Delusions" studies crowd psychology through historical examples of financial bubbles and mass hysteria. It remains influential in understanding economic speculation and predicting market crashes.