Simon Willison's Weblog: Entries simonwillison.net

Reverse engineering some updates to Claude

simonwillison.net·40w·Hacker News

Trying out Qwen3 Coder Flash using LM Studio and Open WebUI and LLM

simonwillison.net·40w

My 2.5 year old laptop can write Space Invaders in JavaScript now

simonwillison.net·41w·Hacker News, r/LocalLLaMA

Using GitHub Spark to reverse engineer GitHub Spark

simonwillison.net·41w·Hacker News

Scraping and vibe coding a schedule app for Open Sauce 2025 entirely on my phone

simonwillison.net·42w·Lobsters, Hacker News

Happy 20th birthday Django! Here's my talk on Django Origins from Django's 10th

simonwillison.net·43w·Lobsters, Hacker News

Grok: searching X for "from:elonmusk (Israel OR Palestine OR Hamas OR Gaza)"

simonwillison.net·43w·Hacker News, Hacker News

Phoenix.new is Fly's entry into the prompt-driven app development space

simonwillison.net·46w·Hacker News

Trying out the new Gemini 2.5 model family

simonwillison.net·47w

The lethal trifecta for AI agents: private data, untrusted content, and external communication

simonwillison.net·47w·Lobsters, Hacker News, Hacker News, Hacker News

An Introduction to Google’s Approach to AI Agent Security

simonwillison.net·47w

Design Patterns for Securing LLM Agents against Prompt Injections

simonwillison.net·47w·Lobsters, Hacker News

Comma v0.1 1T and 2T - 7B LLMs trained on openly licensed text

simonwillison.net·48w·Hacker News

The last six months in LLMs, illustrated by pelicans on bicycles

simonwillison.net·48w·Hacker News, Hacker News

Tips on prompting ChatGPT for UK technology secretary Peter Kyle

simonwillison.net·49w

How often do LLMs snitch? Recreating Theo's SnitchBench with LLM

simonwillison.net·49w·Hacker News

Talking AI and jobs with Natasha Zouves for News Nation

simonwillison.net·49w

Large Language Models can run tools in your terminal with LLM 0.26

simonwillison.net·50w·Lobsters, Hacker News

Highlights from the Claude 4 system prompt

simonwillison.net·50w·Hacker News, Hacker News

Live blog: Claude 4 launch at Code with Claude

simonwillison.net·50w·Hacker News

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