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Experimenting with Starlette 1.0 with Claude skills
Simon Willison

Experimenting with Starlette 1.0 with Claude skills

ai

Mar 22, 2026

Starlette 1.0 is out! This is a really big deal. I think Starlette may be the Python framework with the most usage compared to its relatively low brand recognition because …

Perhaps not Boring Technology after all
Simon Willison

Perhaps not Boring Technology after all

technology

Mar 9, 2026

A recurring concern I’ve seen regarding LLMs for programming is that they will push our technology choices towards the tools that are best represented in their training data, making it …

GPT-5.4 mini and GPT-5.4 nano, which can describe 76,000 photos for $52
Simon Willison

GPT-5.4 mini and GPT-5.4 nano, which can describe 76,000 photos for $52

ai

Mar 17, 2026

OpenAI today: Introducing GPT‑5.4 mini and nano. These models join GPT-5.4 which was released two weeks ago. OpenAI’s self-reported benchmarks show the new 5.4-nano out-performing their previous GPT-5 mini model …

Thoughts on OpenAI acquiring Astral and uv/ruff/ty
Simon Willison

Thoughts on OpenAI acquiring Astral and uv/ruff/ty

ai

Mar 19, 2026

The big news this morning: Astral to join OpenAI (on the Astral blog) and OpenAI to acquire Astral (the OpenAI announcement). Astral are the company behind uv, ruff, and ty—three …

Writing about Agentic Engineering Patterns
Simon Willison

Writing about Agentic Engineering Patterns

ai

Feb 23, 2026

I’ve started a new project to collect and document Agentic Engineering Patterns—coding practices and patterns to help get the best results out of this new era of coding agent development …

Can coding agents relicense open source through a “clean room” implementation of code?
Simon Willison

Can coding agents relicense open source through a “clean room” implementation of code?

ai

Mar 5, 2026

Over the past few months it’s become clear that coding agents are extraordinarily good at building a weird version of a “clean room” implementation of code. The most famous version …

Project NOMAD - Knowledge That Never Goes Offline
Hacker News

Project NOMAD - Knowledge That Never Goes Offline

productivity

Mar 22, 2026

A self-contained offline server packed with encyclopedic knowledge, local AI, and essential tools — ready when the internet isn't.

Profiling Hacker News users based on their comments
Simon Willison

Profiling Hacker News users based on their comments

ai

Mar 21, 2026

Here’s a mildly dystopian prompt I’ve been experimenting with recently: “Profile this user”, accompanied by a copy of their last 1,000 comments on Hacker News. Obtaining those comments is easy. …

Introducing GPT-4.1 in the API
OpenAI
6 min read

Introducing GPT-4.1 in the API

AI

Apr 14, 2025

OpenAI introduces the GPT-4.1 family with stronger coding, instruction following, and long-context performance for developers.

Claude 3.7 Sonnet and Claude Code
Anthropic
5 min read

Claude 3.7 Sonnet and Claude Code

AI

Feb 24, 2025

Anthropic announces Claude 3.7 Sonnet with stronger reasoning and Claude Code for agentic developer workflows.

The gold standard of optimization: A look under the hood of RollerCoaster Tycoon
Hacker News

The gold standard of optimization: A look under the hood of RollerCoaster Tycoon

technology

Mar 22, 2026

Due to some lucky circumstances, I recently had the chance to appear in one of the biggest German gaming podcasts, Stay Forever, to talk about the technology of RollerCoaster Tycoon (1999). It was …

Something is afoot in the land of Qwen
Simon Willison

Something is afoot in the land of Qwen

ai

Mar 4, 2026

I’m behind on writing about Qwen 3.5, a truly remarkable family of open weight models released by Alibaba’s Qwen team over the past few weeks. I’m hoping that the 3.5 …

I vibe coded my dream macOS presentation app
Simon Willison

I vibe coded my dream macOS presentation app

ai

Feb 25, 2026

I gave a talk this weekend at Social Science FOO Camp in Mountain View. The event was a classic unconference format where anyone could present a talk without needing to …

What to build with LLMs
Simon Willison
8 min read

What to build with LLMs

AI

Mar 11, 2024

Practical guidance on where LLM products deliver value, with an emphasis on useful constraints and user experience.

Introducing GitHub Models
GitHub
4 min read

Introducing GitHub Models

Productivity

Oct 29, 2024

GitHub Models brings model evaluation and prompt experimentation closer to developers inside the GitHub workflow.

Why I love NixOS
Hacker News

Why I love NixOS

ai

Mar 22, 2026

Why I love NixOS is really about the Nix package manager, reproducibility, and sane system management in the LLM coding era.

Introducing Linear Asks
Linear
3 min read

Introducing Linear Asks

Productivity

Nov 12, 2024

Linear explores AI-assisted issue intake and workflow triage for high-velocity product teams.

Ctrl-C in psql gives me the heebie-jeebies - Neon
Hacker News

Ctrl-C in psql gives me the heebie-jeebies - Neon

ai

Mar 20, 2026

There are a few different reasons to hit the brakes on a Postgres query. Maybe it’s taking too long to finish. Maybe you realised you forgot to create an index that will make it orders of magnitude quicker. Maybe there’s some reason the results are no longer needed. Or maybe you, or your LLM buddy, […]

Cyberattack on vehicle breathalyzer company leaves drivers stranded across the US | TechCrunch
Hacker News

Cyberattack on vehicle breathalyzer company leaves drivers stranded across the US | TechCrunch

technology

Mar 23, 2026

A cyberattack on a U.S. car breathalyzer company has left drivers across the United States reportedly stranded and unable to start their vehicles.

Introducing Notion AI for Work
Notion
4 min read

Introducing Notion AI for Work

Productivity

Feb 22, 2024

Notion expands AI from note generation into search, writing, and knowledge workflows across teams.

How to redraw a city, Out Loud
Works in Progress

How to redraw a city, Out Loud

innovation

Mar 13, 2026

Japan faced some of the world’s toughest planning problems. It solved them by letting homeowners replan whole neighborhoods privately by supermajority vote.

Longevity
Works in Progress

Longevity

science

Mar 11, 2026

How much more can we extend lifespans?

A demonstration at Shippingport
Works in Progress

A demonstration at Shippingport

innovation

Mar 5, 2026

The United States have nuclear electricity due to the efforts of one man

Should everyone be taking statins?
Works in Progress

Should everyone be taking statins?

science

Feb 27, 2026

Heart disease is the leading cause of death worldwide, but it’s also one of medicine’s biggest success stories.

Review: How Africa Works
Works in Progress

Review: How Africa Works

innovation

Feb 26, 2026

How Africa Works by Joe Studwell is the sequel to one of the most influential books written on development in recent decades.

Why Europe has stagnated
Works in Progress

Why Europe has stagnated

innovation

Feb 25, 2026

Episode 13 of the Works in Progress is about regulation, labour markets, and energy