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OpenAI Agents API
Build durable cloud agents with a managed Codex harness.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 1,413 posts.
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Road to Elm 1.0
A delightful language with friendly error messages, great performance, small assets, and no runtime exceptions.
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Python: The Optimization Ladder
Python loses every public benchmark by 21-875x. I took the exact problems people use to dunk on Python and climbed every rung of the optimization ladder -- from CPython version upgrades to Rust. Real numbers, real code, real effort costs.
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Performance Improvements in .NET 11
Take a tour through hundreds of performance improvements in .NET 11.
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Retraction: The App Store Rejection of the Week That Was a Correct Rejection
My disdain for astrology is so utter, and my esteem for Godier’s previous work so high, that it simply never occurred to me that he might have actually made and submitted to the App Store an astrology app, let alone that he’d then feign surprise and frustration that an astrology app was rejected for being an astrology…
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Drunk post: Things I've learned as a senior engineer (2021)
Everything your mentor wants to say but HR won't let them
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What's new in Emacs 31.1
Emacs 31.1 adds a slew of quality-of-life features. It retires its quirky unexec dumper; there are general improvements to tree-sitter, including a much-wanted auto-installer for grammars; and much more.
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MaxxBench – "Nice DeepSWE score. But is it true?"
How coding models respond when familiar engineering tasks ask for something different.
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The First Fully General Computer Action Model
We trained a model on our 11-million-hour video dataset. Our model can explore complex websites, complete multi-action CAD modeling sequences, and drive a car in the real world, all at 30 FPS.
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Anti-patterns in software blogging
Effective writing for software developers
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SWE-bench Verified no longer measures frontier coding capabilities
SWE-bench Verified is increasingly contaminated and mismeasures frontier coding progress. Our analysis shows flawed tests and training leakage. We recommend SWE-bench Pro.
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My temporary PHP fix from 2014 has nearly 20M installs. Today I'm deprecating it
In 2014 I wrote http_build_url, a temporary PHP polyfill for AOL's CMS. Twelve years and nearly 20 million installs later, I'm deprecating it.
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OpenClaw is changing my life
I want to share some thoughts on my recent experience with OpenClaw. Over the past year, I’ve been actively using Claude Code for development. Many people believed AI could already assist with programming—seemingly replacing programmers—but I never felt it brought any revolutionary change to the way I work. Sure…
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Ripple-65B Preview: U.S. Open-Weight SOTA on Agentic Coding
We develop frontier AI methods to reinvent chip development, collapsing traditional design timelines, closing the loop between AI and the hardware that fuels it, and enabling a Cambrian explosion of custom silicon.
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Why tiny JPEGs look different in Chrome
Guillaume Técher — Personal website
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We ported the original Doom to SQL
CedarDB is a database system that delivers unmatched performance for transactions and analytics, from small writes to handling billions of rows. Built on cutting-edge research to power today’s tools and tomorrow’s challenges.
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Dolphin Progress Release 2603
Dolphin started out as a GameCube emulator in 2003. In 2008, experimental Wii support was added. And now, in 2026, Dolphin enters the realm of arcade emulation with support for the Sega, Namco, and Nintendo arcade effort, the Triforce, finally arriving. Want to learn more about the Triforce? Check out our deep dive…
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Oh My Zsh adds bloat
Why you might not need Oh My Zsh for your Zsh configuration.
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Uv is fantastic, but its package management UX is a mess
uv's CLI feels surprisingly clunky compared to its peers like pnpm or Poetry.
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Building a CLI for all of Cloudflare
We’re introducing cf, a new unified CLI designed for consistency across the Cloudflare platform, alongside Local Explorer for debugging local data. These tools simplify how developers and AI agents interact with our nearly 3,000 API operations.
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MCP was always a bad idea?
Why MCP was always a bad idea and I'm tired of pretending it's not.
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Idempotency is easy until the second request is different
Idempotency is not just an HTTP header or a key lookup. This article covers the failure cases that bite real APIs: different requests with the same key, concurrent retries, partial success, downstream uncertainty, response replay, expiry, and duplicate message handling.
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If you thought code writing speed was your problem you have bigger problems
AI coding tools are optimising the wrong thing and nobody wants to hear it. Writing code was already fast. The bottleneck is everything else: unclear requirements, review queues, terrified deploy…
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I ported Kubernetes to the browser
Almost 100,000 lines of LLM-generated code in 2 months, and none of it is slop.
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What About Rails?
DHH's opening keynote had shockingly little to say about Rails.
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Muse Code and Muse Spark 1.2
Introducing Muse Code, a terminal coding agent powered by Muse Spark 1.2, with persistent background agents, repository-scale execution, and built-in verification.
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Why don't more developers “use the platform”?
For years, advocates for web standards, performance, and accessibility have implored web developers to “use the platform”. I’ve often been one of those…
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Should you normalize RGB values by 255 or 256?
Let’s say you’re writing an image processing program. The program takes in an image, converts it to floating point, does some processing and finally saves the modified pixels to disk as 8-bit colors. The question today concerns how exactly the integer-to-float conversion should be done. There are two approaches which…