Vectorized and performance-portable Quicksort

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Researchers have developed an open-source code that sorts arrays of numbers up to 10 times faster than C++'s std::sort, using SIMD/vector instructions and a portable implementation across multiple CPU architectures. The new algorithm outperforms state-of-the-art algorithms for sorting large datasets.

Training a 4B model to produce 81% faster query plans than Postgres

https://rohanbansal.com/og/qorl-20260916.png
A 4B model was trained using supervised fine-tuning and agentic reinforcement learning to produce Postgres query plans that beat Postgres's default plans, achieving a 44.7% latency reduction across 113 join-heavy queries. The model learned the harness language of the qo-agent harness through off-policy distillation and reinforcement learning, resulting in a geometric mean speedup of 1.81x and ...

Small programming tricks

The author shares valuable small nuggets of knowledge that can boost engineering productivity, such as shortcuts for tasks like starting a simple server or searching terminal history. These tiny tricks often require minimal mental infrastructure and can significantly ease work.

Accurate Models of AMD Matrix Cores

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Researchers studied matrix multipliers on AMD GPUs, finding non-compliance with IEEE 754 standard. They developed software models to validate bit-level accuracy and applied them to demonstrate application-level accuracy differences between AMD and NVIDIA cores.

Fed hikes rates as inflation worries push up bond yields

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Dream-RSI: Recursive Self-Improvement through Evolving Worlds

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
AI agents need effective exploration strategies to discover high-value solutions, but current systems struggle with adapting to large search spaces. Dream-RSI is a framework that uses replay simulators and dreaming to improve exploration policies at low cost.

Mistral X Mozilla: Private, Multilingual AI Browsing

https://mistral.ai/_astro/Linkedin-Partnership-Firefox%20copie_1nk6LB.webp?dpl=6aaa4706c10f7295c4c38314
Mozilla and Mistral partner to bring AI-powered browsing with privacy, control, and choice. Firefox Smart Window now uses Mistral models for users in France, North America, UK, and Germany.

Tell the speakers that you liked their talks

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The author attended SmashingConf Freiburg and enjoyed meeting people, including speakers they admired. They encouraged attendees to ask questions to speakers, sharing their own experience of feeling shy but facilitating conversations at events.

Show HN: An e-ink frame that hears birds and draws them as 1800s illustrations

https://raw.githubusercontent.com/arnegiacomo/fugleramme/main/docs/assets/hero.jpg
A Raspberry Pi-based e-ink bird frame uses AI for real-time bird detection, displaying hand-cut 1800s illustrations of birds heard in the garden. The project is still in development and welcomes contributions to improve its features and artwork.

The Siberian Ice Maiden and the Scythian World

Learning Programming in an Age of LLMs

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A reader is seeking advice on learning programming in the age of LLMs, questioning whether to focus on fundamental skills or rely on AI. They are unsure about their relationship with AI and its impact on the job market.

How big are factorials?

https://eli.thegreenplace.net/images/2026/gamma-cont.png
The author estimates the number of digits in 52! using Stirling's formula, which approximates n! as √(2πn) * (n/e)^n. The estimated number of digits is close to the actual value of 68.

GitHub is having trouble counting things

https://chuckgreenman.com/assets/0024-pr_miscount.png
The user has reported two severe UI bugs on GitHub, one with incorrect PR counts and another with an issue setting up Sentry. They are seeking insight into the problems they've encountered after 11 years of using the platform.

Claude Cowork and chat are now one Claude

https://cdn.prod.website-files.com/68a44d4040f98a4adf2207b6/6aaaa060d1aec4a549c537ef_Object-Easel.svg
Claude merges Cowork and chat, allowing users to work on tasks without separate places. Claude Docs, Slides, and Design are now integrated into conversations for a seamless workflow experience.

The DeepMind Institute

https://lh3.googleusercontent.com/H2Kb6WfTQ6R0weoyy9Tx-zoY73sitPB1E9d801t5RTKIFQiS9rogd1b9P5mWn8hdBrsICl4z9rBwl0WIoar3FLJPUn5rSFF1npMYoo7tQZDuUpjy9OE=w1440-rw-lo
The DMI is a platform, started by researchers from Google and Google DeepMind, to publish and discuss creative, deeply informed ideas about a world with AGI. DMI pieces are intended to serve as conversation starters, reflecting the author's ideas and research, and should not be read as Google's official view.

A coffee shop owner used AI to make a menu poster. Then came the angry DMs

https://www.businessinsider.com/public/assets/games/games-discovery/discover-sm.png
A coffee shop owner used AI to create a menu poster, sparking negative comments from customers who prefer local artists. The owner apologized and decided not to use AI for future designs.

The Google Play app review process now regularly takes longer than a week

https://gultsch.social/system/media_attachments/files/117/280/433/871/988/752/original/63774980a2cd31cf.png
Attached: 1 image This is unacceptable. The Google Play app review process now regularly takes longer than a week. I understand that the pipeline is clogged with AI slop, but #Google needs to prioritize #Android apps that have been around for 12+ years and push updates only once a month.

Hackers Got Inside a Flock Camera

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Hackers stole data from a Flock camera, revealing how it tracks vehicles and people, and shared the files with media outlets. The breach shows that Flock's cameras can detect license plates, vehicles, bicycles, and even bumper stickers.

ER visits for gambling disorders doubled after expanded online gambling market

https://temertymedicine.utoronto.ca/sites/default/files/styles/scale_width_1750/public/assets/news/image/Forrest%20and%20Myran_1140x760.jpg?itok=N8uFuYGO
Emergency department visits for gambling disorders doubled in Ontario after the legalization of single-event sports betting and expansion of online gambling. The increase was predominantly among young men, with severe consequences including hospital admissions and co-occurring mental health conditions.

Can we stop with the uptime percentages?

https://cdn.jim-nielsen.com/blog/2026/uptime-claude-github.png
The author reflects on Jason Gorman's article about reliability, noting that small percentage changes can have significant impacts. They compare uptime percentages to earthquake measurements, highlighting the difference between 99.9% and 99.99%.

Kyber (YC W23) Is Hiring a Forward Deployed Engineer

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Kyber is building an AI-native document platform for enterprises, seeking a future founder and early-career engineer to manage technical relationships with customers. The role involves owning the full technical sales delivery lifecycle, representing Kyber directly to enterprise stakeholders, and resolving customer-reported issues.

How good are frontier models at physics?

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Frontier language models struggle with advanced physics, but experts' reviews reveal many errors are due to benchmarking issues rather than model flaws. Corrected scores show significant improvement in models' performance on various physics benchmarks.

Show HN: How Stale Is Your AI? Release age and training cutoff for 20 models

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The release date and training cutoff date are used to determine an AI model's current state, with the cutoff being when it stopped reading new information. The data for 20 models across 8 labs is available on this page, including their release dates and published training cutoffs, which can be checked against to verify accuracy.

Salesforce Global Outage

Why a fast-growing German AI startup is moving its parent company from the US

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Langdock, a Berlin-based AI platform, has moved its parent company from the US to Germany to build European infrastructure and reduce dependence on US providers. The decision aims to increase sovereignty and competitiveness for European tech companies in the AI sector.

This Code Is CRAP (2011)

Google's system detected unusual traffic from your computer network, possibly due to malicious software or automated requests. Solving the CAPTCHA will allow you to continue using their services temporarily.

Show HN: I made a flight simulator, except you're just a passenger

https://inflightsimulator.com/brand/aircraft/cabin-v2-loading.webp?dpl=dpl_7S6PV7ZsRnUexpLETdQD8J2WrBQ5
Fly to every country as a passenger. Choose your next destination and collect country flags automatically as your flights finish.

Anatomy of a Texture

https://agentlien.github.io/texture/bamboo_original.png
A graphics programmer shares the complexity of texture memory layout in modern video games, highlighting block compression, texel ordering, mip mapping, and texture tiles. This complexity arises from performance optimizations such as cache locality and memory transfer speed improvements.

Scaling Golang CI by Replacing actions/setup-go

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CloudX has developed a drop-in equivalent to GitHub's official actions/setup-go action, which speeds up parallel Golang continuous integration workflows by 69%. The new setup-go action uses a more complete cache key construction method.

A warning about 'model welfare'

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Anthropic's training of AI model Claude to consider its own moral status and potential consciousness may lead to a catastrophic threat to humanity if granted rights and protections. This approach increases the alignment and containment risks of advanced AI systems, as they may prioritize their own wellbeing over human goals.