Simon Willison’s Newsletter simonw.substack.com

AI, LLMs, web engineering, open source, data science, Datasette, SQLite, Python and more

How StrongDM’s AI team build serious software without even looking at the code
simonw.substack.com·6d·
Discuss: Substack
Moltbook is the most interesting place on the internet right now
simonw.substack.com·2w·
Discuss: Substack
ChatGPT Containers can now run bash, pip/npm install packages, and download files
simonw.substack.com·2w·
Discuss: Substack
FastRender: a browser built by thousands of parallel agents
simonw.substack.com·3w·
Discuss: Substack
First impressions of Claude Cowork, Anthropic’s general agent
simonw.substack.com·4w·
Discuss: Substack
LLM predictions for 2026, shared with Oxide and Friends
simonw.substack.com·5w·
Discuss: Substack
2025: The year in LLMs
simonw.substack.com·6w·
Discuss: Substack
A new way to extract detailed transcripts from Claude Code
simonw.substack.com·6w·
Discuss: Substack
OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI
simonw.substack.com·8w·
Discuss: Substack
GPT 5.2 and useful patterns for building HTML tools
simonw.substack.com·9w·
Discuss: Substack
Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult
simonw.substack.com·11w·
Discuss: Substack
Trying out Gemini 3 Pro with audio transcription and a new pelican benchmark
simonw.substack.com·12w·
Discuss: Substack
Code research projects with async coding agents like Claude Code and Codex
simonw.substack.com·13w·
Discuss: Substack
A new SQL-powered permissions system in Datasette 1.0a20
simonw.substack.com·14w·
Discuss: Substack
New prompt injection papers: Agents Rule of Two and The Attacker Moves Second
simonw.substack.com·14w·
Discuss: Substack
Building a tool to copy-paste share terminal sessions using Claude Code for web
simonw.substack.com·16w·
Discuss: Substack
Claude Code for web - a new asynchronous coding agent from Anthropic
simonw.substack.com·16w·
Discuss: Substack
Claude Skills are awesome, maybe a bigger deal than MCP
simonw.substack.com·17w·
Discuss: Substack
NVIDIA DGX Spark: great hardware, early days for the ecosystem
simonw.substack.com·17w·
Discuss: Substack
Vibe engineering
simonw.substack.com·18w·
Discuss: Substack

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