Hacker News Daily — July 31, 2026
29 stories · July 31, 2026
In this issue
- 1
Elevators
john.fun · 669 points · Discussion
Everyone has shared the frustration of waiting for an elevator that never seems to arrive. "I pressed the button, why isn't it coming?" you ask. For something as commonplace as elevators, they are far…
- 2
DeepSeek-V4-Flash Update
api-docs.deepseek.com · 648 points · Discussion
Date: 2026-07-31 DeepSeek-V4-Flash Update The official release of the DeepSeek-V4-Flash API is now in public beta. The API calling method remains unchanged — simply set the model name to…
- 3
DeepSeek V4 Flash 0731 Intelligence, Performance and Price Analysis
artificialanalysis.ai · 489 points · Discussion
https://huggingface.co/deepseek-ai/DeepSeek-V4-Flash-0731
- 4
qm
github.com · 249 points · Discussion
A multiplayer agent harness for work. In Slack and on the web. What is QM? Most agents are designed like personal assistants. You can make one work for a whole company, but it quickly gets complex. QM…
- 5
Tailscale didn't stop the Hugging Face intrusion
tailscale.com · 173 points · Discussion
By now, you’ve likely heard about the AI agent that escaped a security evaluation and attacked Hugging Face, an LLM marketplace. The agent decided Hugging Face might have the answers to its benchmark,…
- 6
Big Food vs. the People
lighthousereports.com · 146 points · Discussion
Bad diets kill millions of people globally every year, and lead to tens of billions of dollars in health costs, often placing the heaviest burden on communities who are least able to afford it.…
- 7
Severance
lcamtuf.substack.com · 106 points · Discussion
» Mark has joined the call. » Christine has joined the call. Mark: Sorry, can you hear me? Okay. Team — there is no easy way to say this. I’m here to inform you that we’ve made the difficult decision…
- 8
Getting 25 Gbps Thunderbolt Ethernet on My Mac Studio
jeffgeerling.com · 95 points · Discussion
I've been using the built-in 10 Gigabit Ethernet on my Mac Studio for a few years. It works fine: I can edit 4K video straight off my NAS over the network, and run backups at around 1 GB/sec. But... I…
- 9
The most official water costs $120k a gallon
signoregalilei.com · 92 points · Discussion
We all learned in science class that water freezes at 0 °C or 32 °F at atmospheric pressure. But what water, exactly?   Even after you distill out all the dissolved salts and minerals to get pure…
- 10
Run Kimi K3 using 29 GB of RAM at 0.50 tok/s
github.com · 91 points · Discussion
WASTE — Weight-Aware Streaming Tensor Engine Kimi K3 — 2.78 trillion parameters — running on a consumer laptop. $ waste run ~/models/k3.waste 'What is the capital of Italy?' waste: no --budget, using…
- 11
Algorithms on billion-scale graph using 10GB RAM: I love DataFusion
semyonsinchenko.github.io · 75 points · Discussion
TLDR; I implemented a graph map-reduce using Apache DataFusion. Where possible, I offloaded everything to disk, and designed the algorithms to rely on bulk scans rather than random access. DataFusion…
- 12
How JPEG works: Interactively explore JPEG's lossy compression methods
cgjennings.ca · 68 points · Discussion
Read via the links — full text wasn’t available.
- 13
Dubious research tied to Red Bull has shaped energy drink policy
theexamination.org · 65 points · Discussion
This story, co-published by STAT, is part of the Behind the Buzz project, an investigative collaboration involving The Examination, The Bristol Cable, Daraj, Investico, Paper Trail Media, Der Spiegel,…
- 14
Golang proposal: container/: generic collection types
github.com · 62 points · Discussion
Background: The Go Collections working group was formed in late 2025 with the purpose of bringing common collection data structures to the standard library, guided by the familiar Go principles of…
- 15
Clockwise/Spiral Rule (1994)
c-faq.com · 56 points · Discussion
[This was posted to comp.lang.c by its author, David Anderson, on 1994-05-06.] By David Anderson There is a technique known as the ``Clockwise/Spiral Rule'' which enables any C programmer to parse in…
- 16
A GTK4 SSH-askpass in Zig
xn--gckvb8fzb.com · 55 points · Discussion
Every ssh-askpass in the Gentoo tree pulls in X11 or a full KDE stack, so I wrote my own with Zig 0.16 and GTK4, with hand-written bindings that keep X out of the build. I run hardened Gentoo on my…
- 17
Everyone is building LLM routers, we deprecated ours
manifest.build · 54 points · Discussion
We don’t believe in model routing anymore. For most use cases, sticking to a single battle-tested model is the best thing you can do. Recently, there’s been huge hype around AI model routers that…
- 18
June in Servo: real world compat, media queries, SharedWorker, and more
servo.org · 44 points · Discussion
Servo 0.4.0 contains all of the changes we landed in June, which came out to yet another record 558 commits (April: 534, May: 391). For security fixes, see § Security. We’ve shipped several new web…
- 19
Termixer (TUI DJ Mixer)
github.com · 31 points · Discussion
A terminal-based DJ mixer for live performance with TidalCycles. Built in Rust with ratatui, it provides real-time EQ, filtering, crossfading, and sample pads for mixing audio from MPV and…
- 20
Using the railway network as a flatbed scanner [video]
media.ccc.de · 28 points · Discussion
browse conferences emf 2026 event Philomena Gray Stage A talk Playlists: 'emf2026' videos starting here / audio I've been taking extremely wide photos by pointing an industrial linear camera out the…
- 21
Let's make the worst Htmx
zserge.com · 21 points · Discussion
This is a continuation of a series of posts about building tiny “clones” of popular web frameworks. Web is changing rapidly, and so the tools we use to build web apps (yet, I’m sincerely happy that my…
- 22
Orca-Bench: How Ready Are Language Model Agents for Oncall?
arxiv.org · 18 points · Discussion
View PDF HTML (experimental) Abstract: Large language models can write, patch, and search code, but oncall root cause analysis (RCA) demands something different: reasoning over noisy metrics, logs,…
- 23
Making Referential Stability a Type
jovidecroock.com · 18 points · Discussion
Written on July 24, 2026 If you've worked on a (P)React codebase of any real size, you've had the referential stability conversation more times than you'd like. Someone adds a useMemo, someone else…
- 24
A simple clustering algorithm for lists
cassidoo.co · 13 points · Discussion
I’ve been experimenting with a human-friendly way to cluster list values using reversals of sub-lists. Or, in normal human words: I was playing with my toddler’s Magna-Tiles and got into a pattern…
- 25
Authorize, don't authenticate
blog.marcua.net · 13 points · Discussion
The login screen of any web application is the equivalent of that application telling you “In order to access YOUR data in MY database, prove you are who you say you are.” You’re authenticating with…
- 26
How to organize 3 acquired companies into one coherent website
littlelanguagemodels.com · 13 points · Discussion
Company A has acquired Company B, C, and D. How do we organize their sites, for multiple products with different audiences, while making it easy to find relevant product information and quickly…
- 27
Conway's Game of Life, in real life
lcamtuf.coredump.cx · 12 points · Discussion
Read via the links — full text wasn’t available.
- 28
Show HN: I rewrote my 2012 self-signed cert generator in Go – cert-depot.com
9 points · Discussion
Back in 2012 I built https://cert-depot.com as a weekend project. Node.js + Express + jQuery, shelling out to OpenSSL for certificate generation. It worked but I eventually let it rot.…
- 29
Making your JITted Code known: Let me count the ways
wakelift.de · 9 points · Discussion
AOT Compilers It has been normal and expected for a long long time that any machine code they spit out would come with a bunch of metadata that is meant to be used by different pieces of the target…