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.
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.
Conception has successfully generated early human egg cells from stem cells using a simple blood draw. They have created miniature human ovaries containing early eggs, a major scientific advance towards redefining fertility.
arXiv will spin out from Cornell University to become an independent nonprofit organization on July 1, 2026. This change will bring new flexibility and opportunities while maintaining arXiv's mission and values of free access to scientific ideas and discoveries.
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.
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.
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.
Researchers improved recurrent neural networks (RNNs) for noisy associative recall (NAR) by orthogonalizing their memory matrix during reads. This technique, inspired by Muon optimizer, significantly improved NAR performance in various tasks and vocab sizes.
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.
An updated Lean 4 formal proof engineering model optimised for automated theorem proving and autoformalization. 119B total parameters, 6.5B active.
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.
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.
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.
Sometimes the medium and the message have a more complicated relationship than expected. “B as in Bravo.” You’ve done it: spelling a word down a bad phone line, reaching past the letters for whole words, because B and D and P all blur into the same mush the moment the line frays. That is not a quirk of bad reception. It is one of the deepest ideas in modern communication, performed by a human ...
The author of Pystd, a custom C++ standard library, is frustrated with the slow compilation times of C++ due to the large size of standard library headers. Pystd aims to minimize build times with a design priority of speed, achieving a build time of 1.9 seconds on a 16-core processor.
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.
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The picture above shows how transistor action was observed by improvising an insulated gate to a cadmium sulfide photo resistor. The picture was taken in normal light but the experiment had to be performed in the dark. The photocell used is pictured above. It is a very common type which I purchased from Radio Shack many years ago. I have long suspected that if a successful homemade transistor ...
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.
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.
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.
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.
Hatari - the Atari ST/STE/TT/Falcon emulatorResize canvas Lock/hide mouse pointer
Meta is limiting Conversation Focus on its AI glasses to 3 hours per month unless users pay $19.99 for a premium subscription. The feature runs on-device and doesn't require an internet connection, making the rate limit seem "bogus" and possibly a money-saving tactic.
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.
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 ...
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.
CParsec is a fast CSV parser for C that generates inlinable functions for parsing CSV rows. It is ~1.25 times faster than Rust's csv and ~20 times faster than attoparsec-csv.
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.
Researchers created WGO-Bench, a benchmark for testing robotics subtask annotation performance, and found that Gemini models are the best for this task, outperforming other models by 24.5%. They developed a scalable pipeline to annotate subtasks from egocentric and robot videos, costing $2.64 per hour of video, and made the full pipeline open source in Refiner.