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GPT-5-Codex
Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or even your phone.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,220 posts.
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A Love Letter to People Who Believe in People
Tina on the transformative power of enthusiasm When I was eight, I made a big, hand-drawn poster that said, “Do you want to join my fan club?” and put it up in the small Swiss town where I grew up.…
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Things I would have told myself before building an autorouter
Important lessons from trying to build the world's fastest autorouter for about a year
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How big a solar battery do I need to store all my home's electricity?
I have a modest set of solar panels on an entirely ordinary house in suburban London. On average they generate about 3,800kWh per year. We also use about 3,800kWh of electricity each year. Obviously, we can't use all the power produced over summer and we need to buy power in winter. So here's my question: How big a…
1235
Web Browsers have stopped blocking pop-ups
If you were an Internet user for a few years on either side of the turn of the millennium, you will remember pop-up advertisements.
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Perl's decline was cultural
There's been a flurry of discussion on Hacker News and other tech forums about what killed Perl. I wrote a lot of Perl in the mid 90s and subsequently worked on some of the most trafficked sites on the web in mod_perl in the early 2000s, so I have some thoughts. My take: it was mostly baked into the culture. Perl grew…
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I wrote a book called “Crap Towns”. It seemed funny at the time
In 2003, I wrote a book called Crap Towns. It seemed funny at the time. But plenty of people say it would not be possible to publish it today. Is that a problem?
1238
How to Think About GPUs
We love TPUs at Google, but GPUs are great too. This chapter takes a deep dive into the world of GPUs – how each chip works, how they're networked together, and what that means for LLMs, especially compared to TPUs. While there are a multitude of GPU architectures from NVIDIA, AMD, Intel, and others, here we will…
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A Fast 64-Bit Date Algorithm (30–40% faster by counting dates backwards)
Counting years backwards unlocks faster speed. The first date algorithm to use only 4 multiplications, instead of 7+
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FediMeteo: A €4 FreeBSD VPS Became a Global Weather Service
How a simple idea turned into an international weather service on the Fediverse.
1241
Celebrating 20 Years of MDN
MDN turns 20! Let's look at how we started, how MDN became the most trusted resource for web developers, the impact it's had on the open web, and yes, there's cake, too.
1242
UK House of Lords attempting to ban use of VPNs by anyone under 16
This is deranged, each nation’s boomers and reactionaries attempting to outdo the others: “Action to prohibit the provision of VPN services to children in the United Kingdom” … th…
1243
You don't want to hire "the best engineers"
I think this might be the meanest thing I've ever written.
1244
The ideal candidate will be punched in the stomach
The description suggests that this is some kind of extended metaphor about work. It appears to be written in that _Choose Your Own Adventure_ style second-person voice, yet there are no choices to be found within. Against your better judgment, you follow the link.
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Pyrefly vs. Ty: Comparing Python's two new Rust-based type checkers
A deep dive into Meta's pyrefly and Astral's ty - two new Rust-based Python type checkers that both promise faster performance and better type inference.
1247
The UK is still trying to backdoor encryption for Apple users
The Financial Times reports that the U.K. is once again demanding that Apple create a backdoor into its encrypted backup services. The only change since the last time they demanded this is that the order is allegedly limited to only apply to British users. That doesn’t make it any better.The demand...
1248
Finding a 27-year-old easter egg in the Power Mac G3 ROM
I was recently poking around inside the original Power Macintosh G3’s ROM and accidentally discovered an easter egg that nobody has documented until now.
1249
ACM Transitions to Full Open Access
Open Access Publication & ACM
1250
The untold impact of cancellation
Warning: towards the end of this post are references to suicide, which may be distressing to some readers. Discretion is advised.
1251
When flat rate movers won't answer your calls
Back in 2023 I went through an inter-state move with Flat Rate Movers, LTD. , a.k.a. Flat Rate Moving, US DOT 488466, MC 254356. They bungled the job, damaged my stuff and my house, and then refused to talk to me or their own insurance company. I placed dozens of calls, wrote letters, emails, nothing worked. I finally…
1252
Advanced Python Features
A collection of advanced Python features that I've found interesting, underrated, or unique - as someone who's seen a lot of Python code.
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My experience with Claude Code after two weeks of adventures
Hatching... Cursor Shenanigans Cursor, my beloved, started rate limiting shenanigans a few days back. For a good 2 weeks after June 16, 2025, we had almo...
1256
LLMs are steroids for your Dunning-Kruger
ChatGPT and LLMs amplify both insight and illusion. They are not knowledge engines, but confidence engines shaping how we think and learn.
1257
Endometriosis is an interesting disease
5k words, 23 minutes reading time
1258
Wikimedia Foundation Challenges UK Online Safety Act Regulations
Wikipedia is the backbone of knowledge on the internet. Learn how the Wikimedia Foundation is safeguarding it under the UK Online Safety Act.
1259
Overengineered Anchor Links
Learn about the overengineered anchoring pattern, a technique to improve the user experience of scrollable content.
1260
The Golden Age of Japanese Pencils (2022)
It was the summer of 1952, and the executives of Tombow Pencil were about to revolutionize the Japanese pencil industry—or, possibly, fall flat on their faces. Hachiro Ogawa, the son of founder Harunosuke Ogawa, was Tombow's managing director, and he had just finished a years-long project, at