Hacker News Daily — September 22, 2026
30 stories · September 22, 2026
In this issue
- 1
Claude Opus 5.5
anthropic.com · 889 points · Discussion
We’re introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 on most work and costs 40% less to run than Opus 5. Claude Opus 5.5 is our…
- 2
GPT-6 Sol and Luna
openai.com · 810 points · Discussion
Read via the links — full text wasn’t available.
- 3
Apple has added persistent 'ads' to iOS, and it's driving users crazy
techradar.com · 509 points · Discussion
(Image credit: Shutterstock / fizkes) iOS users are seeing ‘ads’ for other Apple products on their iPhones The banners promote services like iCloud+, Apple Music and AppleCare+ The messages often…
- 4
OpenAI GPT–6 Astra breaks Enigma message that has resisted solution since 2005
cryptocellar.org · 486 points · Discussion
OpenAI GPT–6 Astra breaking an Enigma message that has resisted solution since 2005. On 15 September 2026, Carter Leffer contacted me to request validation of a break of the German Army Enigma message…
- 5
Overreliance on AI contributed to missile strike on Iran school – Pentagon
bloomberg.com · 228 points · Discussion
Read via the links — full text wasn’t available.
- 6
OpenAI is well positioned to fast-follow Jev
arcturus-labs.com · 222 points · Discussion
TypeSafe's Jev introduced a new spin on large language models that has taken the AI world by storm. According to Vercel, "Jev was adopted faster than any other model in AI Gateway history."... But…
- 7
There's a high chance of devices being sold with GrapheneOS preinstalled in 2027
grapheneos.social · 199 points · Discussion
Read via the links — full text wasn’t available.
- 8
Claude Opus 5.5 Intelligence, Performance and Price Analysis (Max)
artificialanalysis.ai · 167 points · Discussion
Intelligence Updated Artificial Analysis Intelligence Index Artificial Analysis Intelligence Index v4.3.2 incorporates 10 evaluations: AA-Briefcase v1.1, GDPval-AA v2.1, AutomationBench-AA,…
- 9
MUNI Heritage Weekend in San Francisco
daniel.lawrence.lu · 129 points · Discussion
2026-09-20 I went to San Francisco for Muni Heritage Weekend 2026! I stood by the tracks for three hours with my line scan camera, scanning trams. Tram pics are freely licensed under CC-By-SA 4.0…
- 10
How did AMD Ryzen get 50% faster in two years?
lemire.me · 122 points · Discussion
Read via the links — full text wasn’t available.
- 11
Solitaire Alone Together
solitairealonetogether.com · 120 points · Discussion
Read via the links — full text wasn’t available.
- 12
'We hacked the FBI:' Hackers say they have data on all FBI employees
404media.co · 112 points · Discussion
https://archive.ph/96YBP
- 13
WordPress: Unauthenticated path traversal leading to conditional RCE
github.com · 110 points · Discussion
An unauthenticated attacker can make get_page_template() page-template resolution include a chosen readable local.php file outside the active theme directories. If relevant pre-conditions for both the…
- 14
16-bit Intel 8088 chip (c. 1985)
allpoetry.com · 89 points · Discussion
Read via the links — full text wasn’t available.
- 15
Writing Rust code that's fast by asking agents to make the code faster
minimaxir.com · 85 points · Discussion
In January 2025, I had a fun hypothesis for a blog post: can LLMs write better code if you keep asking them to “write better code”? That was prior to the advent of robust agentic coding, but Claude…
- 16
SAML: A Fractal of Bad Design
blog.trailofbits.com · 79 points · Discussion
Born out of academia and raised in corporate IT departments, the Security Assertion Markup Language (SAML) authentication protocol continues to be a staple in these organizations. However, it’s time…
- 17
- 18
People hooked on vapes try a new way to quit: cigarettes
bloomberg.com · 52 points · Discussion
https://archive.ph/FvOhx
- 19
An update on how we confirm your age group on Discord
discord.com · 52 points · Discussion
TLDR More than 90% of you won’t be asked to confirm your age. Since our last post about teen safety, we've had to launch age assurance solutions in more places, including Texas and Brazil. Laws…
- 20
Porsche puts wireless EV charging into production
electrek.co · 50 points · Discussion
Buried in a press release titled, “Even more colours and even greater convenience for the Cayenne Electric” was news that Porsche, for the first time, would be offering electrically wireless inductive…
- 21
Did OpenAI solve the wrong Navier-Stokes problem?
scientificamerican.com · 43 points · Discussion
Two weeks ago OpenAI claimed a solution to one of the biggest open problems in math —the Navier-Stokes problem —an achievement worth a $1-million prize from the Clay Mathematics Institute. The proof…
- 22
Markdown in /src
htmx.org · 42 points · Discussion
Carson Gross September 21, 2026 TLDR Markdown is becoming source code, not documentation That Markdown should be checked in to /src, next to the code it produces Code and tests should be derived from…
- 23
George Lucas Returns to Earth, Bearing Gifts
commonedge.org · 40 points · Discussion
Appearing like a groun ded and formidable spaceship, the Lucas Museum of Narrative Art, bearing gifts of memories and myths, opened its portals to an Earth-bound selection of people (local notables,…
- 24
What California is learning from solar panels built over irrigation canals
kqed.org · 31 points · Discussion
This story is part of Flipping the Switch, KQED’s series about California’s transition to clean energy and what it means for you. What works? What doesn’t? And how much does it cost? Driving from Los…
- 25
Native apps written in TypeScript and CSS
github.com · 31 points · Discussion
Example applications and tools for GeaStack. This repo is the app gallery used by the simulator, embedded targets, GeaOS, Apple targets, the VS Code/Cursor extension, and marketing demos. Each example…
- 26
Launch HN: Coverage Cat (YC S22) – Umbrella insurance via your personal agent
coveragecat.com · 28 points · Discussion
Hey HN! We’re Max and Gabriel the co-founders of Coverage Cat. We’ve been friends for over a decade, met in college then hung out mostly on the internet. We love building products that help people…
- 27
Show HN: JevBench, a reproducible benchmark for typed decision models
benchmarkheaven.com · 26 points · Discussion
Hi HN! I built JevBench because Jev kicks ass, and the world deserves to know how the serious open source and fake lookalike projects really perform in comparison. Jev-class models return bounded…
- 28
A Faster Shortest Path Algorithm
vals.ai · 21 points · Discussion
Problem Shortest paths is a very simple problem. There is a graph of vertices and (possibly directed) edges that connect them. Each edge has a real number weight. Starting from some vertex, for every…
- 29
Show HN: Training a model to identify AI web content from structure alone
arxiv.org · 18 points · Discussion
Hey HN! We’re Vincent and Jochen from Sitefire ( https://sitefire.ai ). We have been working together for years, with backgrounds in RL/optimization at Stanford and software engineering from Technical…
- 30
The JavaScript Midlife Crisis
maroun-baydoun.com · 11 points · Discussion
A while back, I made a half-observation, half-joke on LinkedIn. The great JavaScript toolchain rewrite barged in. The older tools that helped cement the language's place in our stacks became uncool,…