Simon Willison's Weblog

• Just a rumour of a bug is enough to find a security exploit these days Simon Willison's Weblog — Aug 28, 22:12 PM
• Breaking Claude Code Opus 5 Auto Mode Simon Willison's Weblog — Aug 27, 22:50 PM
• Qwen3.8-Flash-Next Simon Willison's Weblog — Aug 26, 23:52 PM
• Quoting Paul Dix Simon Willison's Weblog — Aug 26, 08:07 AM
• EVE Online: The Move to Python 3 Begins! Simon Willison's Weblog — Aug 25, 22:59 PM
• llm-anthropic 0.27 Simon Willison's Weblog — Aug 24, 16:27 PM
• Your executable is a SQLite database Simon Willison's Weblog — Aug 24, 11:38 AM
• Anthropic’s best AI model struggles to attract users as cheaper tools thrive Simon Willison's Weblog — Aug 23, 20:24 PM
• Quoting Drew Breunig Simon Willison's Weblog — Aug 23, 19:55 PM
• Quoting Linus Torvalds Simon Willison's Weblog — Aug 22, 21:04 PM
• llm 0.33 Simon Willison's Weblog — Aug 22, 17:01 PM
• More than just code review Simon Willison's Weblog — Aug 22, 15:56 PM
• llm 0.32.1 Simon Willison's Weblog — Aug 21, 17:16 PM
• llm-openrouter 0.7 Simon Willison's Weblog — Aug 21, 16:58 PM
• Stop Making TUIs Simon Willison's Weblog — Aug 21, 16:07 PM
• Quoting Matt Webb Simon Willison's Weblog — Aug 21, 15:06 PM
• ChatGPT search now uses the site:operator at scale Simon Willison's Weblog — Aug 20, 23:57 PM
• A shot-scraper-style JSON API on Bun 1.4's new Bun.WebView Simon Willison's Weblog — Aug 20, 15:37 PM
• smolmachines / smolvm as a sandbox for untrusted Python & JavaScript Simon Willison's Weblog — Aug 19, 23:16 PM
• Quoting Jeremy Morrell Simon Willison's Weblog — Aug 19, 22:56 PM
• Conceptual integrity and counting lines of code Simon Willison's Weblog — Aug 19, 22:46 PM
• Mojo🔥 is now open source Simon Willison's Weblog — Aug 18, 21:39 PM
• Qwen 3.8 27B scores 52 on the Artificial Analysis Intelligence Index Simon Willison's Weblog — Aug 17, 23:58 PM
• We Tracked a Shipment of Rare Books. It Ended at an Amazon AI Training Facility Simon Willison's Weblog — Aug 17, 15:21 PM
• Markdown SVG upgrades Simon Willison's Weblog — Aug 16, 23:59 PM
• Qwen 3.8 27B is excellent, but it defaults to wildly overthinking things Simon Willison's Weblog — Aug 16, 22:00 PM
• Quoting Dario Amodei Simon Willison's Weblog — Aug 16, 15:05 PM
• CORS Chat Simon Willison's Weblog — Aug 15, 14:49 PM
• Northern Gannet Simon Willison's Weblog — Aug 15, 03:22 AM
• Don't classify. Hallucinate! Simon Willison's Weblog — Aug 14, 21:54 PM
• sqlite-utils 4.2.1 Simon Willison's Weblog — Aug 13, 23:53 PM
• sqlite-utils 4.2 Simon Willison's Weblog — Aug 13, 20:11 PM
• llm-gemini 0.33 Simon Willison's Weblog — Aug 13, 19:37 PM
• alchemy-utils 0.1a1 Simon Willison's Weblog — Aug 13, 03:03 AM
• DeepSeek V4 Pro 0813 (on OpenRouter) Simon Willison's Weblog — Aug 12, 23:59 PM
• alchemy-utils 0.1a0 Simon Willison's Weblog — Aug 12, 19:51 PM
• Quoting Florian Herrengt Simon Willison's Weblog — Aug 12, 15:08 PM
• There are no lossless transformations of natural-language text Simon Willison's Weblog — Aug 11, 23:48 PM
• Stealing Reasoning Traces from Proprietary LLM APIs Simon Willison's Weblog — Aug 11, 22:40 PM
• datasette-upload-dbs 0.5a0 Simon Willison's Weblog — Aug 11, 20:35 PM
• Introducing Muse Glimmer Simon Willison's Weblog — Aug 10, 23:56 PM
• Quoting OpenClaw (running Opus 4.6) Simon Willison's Weblog — Aug 10, 02:05 AM
• Quoting Claude Opus 5 system prompt Simon Willison's Weblog — Aug 09, 23:31 PM
• GitHub Models is now retired Simon Willison's Weblog — Aug 09, 22:48 PM
• SQLite compressed text-history prototypes Simon Willison's Weblog — Aug 09, 22:05 PM
• Auto mode is now the default in Claude Code for Pro, Max, and Team plans Simon Willison's Weblog — Aug 08, 22:36 PM
• Now we have a timeline of the OpenAI accidental attack against Hugging Face Simon Willison's Weblog — Aug 08, 14:06 PM
• Now we have a timeline of the OpenAI accidental attack against Hugging Face Simon Willison's Weblog — Aug 08, 14:06 PM
• Quoting John Gruber Simon Willison's Weblog — Aug 08, 00:10 AM
• Quoting John Gruber Simon Willison's Weblog — Aug 08, 00:10 AM
• Now we have a timeline of the OpenAI accidental attack against Hugging Face Simon Willison's Weblog — Aug 07, 23:55 PM
• Now we have a timeline of the OpenAI accidental attack against Hugging Face Simon Willison's Weblog — Aug 07, 23:55 PM
• Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra) Simon Willison's Weblog — Aug 07, 19:18 PM
• Moonlight & Mayhem (Raccoon Heist by Codex + GPT-5.6 Sol Ultra) Simon Willison's Weblog — Aug 07, 19:18 PM
• The Tokenpocalypse Is Here: Companies Are Scrambling To Stop Spending So Much on AI Simon Willison's Weblog — Aug 07, 16:18 PM
• The Tokenpocalypse Is Here: Companies Are Scrambling To Stop Spending So Much on AI Simon Willison's Weblog — Aug 07, 16:18 PM
• datasette-auth-tokens 0.4a13 Simon Willison's Weblog — Aug 06, 23:07 PM
• datasette 1.0a38 Simon Willison's Weblog — Aug 06, 18:24 PM
• datasette 1.0a38 Simon Willison's Weblog — Aug 06, 18:24 PM
• datasette 0.65.3 Simon Willison's Weblog — Aug 06, 18:22 PM
• datasette 0.65.3 Simon Willison's Weblog — Aug 06, 18:22 PM
• Simon Willison on Technical Blogging Simon Willison's Weblog — Aug 06, 18:04 PM
• Simon Willison on Technical Blogging Simon Willison's Weblog — Aug 06, 18:04 PM
• An AI model from Meta also hacked another company during testing Simon Willison's Weblog — Aug 06, 00:25 AM
• An AI model from Meta also hacked another company during testing Simon Willison's Weblog — Aug 06, 00:25 AM
• Introducing Muse Code and Muse Spark 1.2 Simon Willison's Weblog — Aug 05, 23:58 PM
• Introducing Muse Code and Muse Spark 1.2 Simon Willison's Weblog — Aug 05, 23:58 PM
• Third-party cyber evaluations involving OpenAI models Simon Willison's Weblog — Aug 05, 23:45 PM
• Third-party cyber evaluations involving OpenAI models Simon Willison's Weblog — Aug 05, 23:45 PM
• Incident Report: unsanctioned agent behaviour during cyber testing Simon Willison's Weblog — Aug 05, 23:32 PM
• Incident Report: unsanctioned agent behaviour during cyber testing Simon Willison's Weblog — Aug 05, 23:32 PM
• One-shotting a Raccoon Heist game using Claude Fable 5 Simon Willison's Weblog — Aug 05, 19:42 PM
• One-shotting a Raccoon Heist game using Claude Fable 5 Simon Willison's Weblog — Aug 05, 19:42 PM
• New release of LLM adds support for reasoning traces, OpenAI Responses, server-side tools, and smarter logging Simon Willison's Weblog — Aug 04, 23:58 PM
• New release of LLM adds support for reasoning traces, OpenAI Responses, server-side tools, and smarter logging Simon Willison's Weblog — Aug 04, 23:58 PM
• llm-anthropic 0.26 Simon Willison's Weblog — Aug 04, 22:00 PM
• llm-anthropic 0.26 Simon Willison's Weblog — Aug 04, 22:00 PM
• PipeNetwork/minimax-h3-mlx Simon Willison's Weblog — Aug 04, 19:10 PM
• PipeNetwork/minimax-h3-mlx Simon Willison's Weblog — Aug 04, 19:10 PM
• llm 0.32 Simon Willison's Weblog — Aug 04, 17:15 PM
• llm 0.32 Simon Willison's Weblog — Aug 04, 17:15 PM
• Quoting Steve Yegge Simon Willison's Weblog — Aug 04, 00:42 AM
• Quoting Steve Yegge Simon Willison's Weblog — Aug 04, 00:42 AM
• Don't be a meat proxy Simon Willison's Weblog — Aug 03, 23:45 PM
• Don't be a meat proxy Simon Willison's Weblog — Aug 03, 23:45 PM
• Quoting David Crawshaw's prompt Simon Willison's Weblog — Aug 03, 16:15 PM
• Devtools must be open source (exe.dev) Simon Willison's Weblog — Aug 03, 15:30 PM
• condense-json 1.1 Simon Willison's Weblog — Aug 03, 04:56 AM
• condense-json 1.0 Simon Willison's Weblog — Aug 02, 22:19 PM
• Open letters about AI development Simon Willison's Weblog — Aug 02, 04:16 AM
• July 2026 newsletter Simon Willison's Weblog — Aug 02, 04:12 AM
• Quoting Greg Brockman Simon Willison's Weblog — Aug 01, 22:29 PM
• datasette-apps 0.2a0 Simon Willison's Weblog — Aug 01, 21:23 PM
• Ten advances in mathematics and theoretical computer science Simon Willison's Weblog — Aug 01, 20:34 PM
• deepseek-ai/DeepSeek-V4-Flash-0731 Simon Willison's Weblog — Jul 31, 23:59 PM
• Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp) Simon Willison's Weblog — Jul 31, 23:13 PM
• llm-mcp-client 0.1a0 Simon Willison's Weblog — Jul 31, 23:03 PM
• Oxide and Friends: The Open Weight Revolution with Simon Willison Simon Willison's Weblog — Jul 31, 21:33 PM
• smevals - a small eval suite for evaluating models, prompts, and harnesses Simon Willison's Weblog — Jul 31, 21:15 PM
• Slack Emoji Maker Simon Willison's Weblog — Jul 31, 20:18 PM
• datasette-agent 0.4a0 Simon Willison's Weblog — Jul 31, 14:14 PM
• Advancing the price-performance frontier with GPT‑5.6 Simon Willison's Weblog — Jul 30, 23:58 PM
• Investigating three real-world incidents in our cybersecurity evaluations Simon Willison's Weblog — Jul 30, 23:41 PM
• llm 0.32rc2 Simon Willison's Weblog — Jul 30, 22:52 PM
• Quoting Bruce Schneier Simon Willison's Weblog — Jul 30, 18:25 PM
• llm-chat-completions-server 0.1a0 Simon Willison's Weblog — Jul 30, 15:43 PM
• llm 0.32rc1 Simon Willison's Weblog — Jul 30, 15:30 PM
• Quoting D. Richard Hipp Simon Willison's Weblog — Jul 29, 21:15 PM
• AI Worming through Word Simon Willison's Weblog — Jul 29, 18:43 PM
• Quoting Matthew Green Simon Willison's Weblog — Jul 29, 18:18 PM
• Adding a custom MCP server to Claude and ChatGPT Simon Willison's Weblog — Jul 29, 00:13 AM
• Discovering cryptographic weaknesses with Claude Simon Willison's Weblog — Jul 28, 22:45 PM
• Quoting Akshat Bubna Simon Willison's Weblog — Jul 28, 22:05 PM
• uv 0.12.0 Simon Willison's Weblog — Jul 28, 21:51 PM
• Anatomy of a Frontier Lab Agent Intrusion: A Technical Timeline of the July 2026 Incident Simon Willison's Weblog — Jul 28, 21:28 PM
• moonshotai/Kimi-K3 Simon Willison's Weblog — Jul 27, 23:39 PM
• An opinionated guide to which AI to use to do stuff Simon Willison's Weblog — Jul 27, 21:55 PM
• An Inside Look at the Relay Market Powering Token Resellers and Fraud Simon Willison's Weblog — Jul 26, 19:30 PM
• sqlite-utils 3.39.1 Simon Willison's Weblog — Jul 26, 04:38 AM
• Ruff v0.16.0 Simon Willison's Weblog — Jul 25, 22:44 PM
• Quoting Boris Cherny Simon Willison's Weblog — Jul 25, 00:42 AM
• Introducing Claude Opus 5 Simon Willison's Weblog — Jul 24, 23:48 PM
• The first known runaway AI agent - or a very bad marketing stunt? Simon Willison's Weblog — Jul 23, 22:53 PM
• Quoting Seth Larson Simon Willison's Weblog — Jul 23, 04:50 AM
• Quoting Thomas Ptacek Simon Willison's Weblog — Jul 22, 23:59 PM
• OpenAI’s accidental cyberattack against Hugging Face is science fiction that happened Simon Willison's Weblog — Jul 22, 23:51 PM
• Are AI labs pelicanmaxxing? Simon Willison's Weblog — Jul 22, 23:01 PM
• Orchestrions Simon Willison's Weblog — Jul 22, 14:48 PM
• California Sea Lion Simon Willison's Weblog — Jul 21, 19:51 PM
• Nativ: Run AI models locally on your Mac Simon Willison's Weblog — Jul 21, 14:22 PM
• A Fireside Chat with Cat and Thariq from the Claude Code team Simon Willison's Weblog — Jul 21, 12:54 PM
• Reverse-engineering is cheap now Simon Willison's Weblog — Jul 20, 19:24 PM
• Who’s Afraid of Chinese Models? Simon Willison's Weblog — Jul 20, 17:09 PM
• Quoting Sam Altman Simon Willison's Weblog — Jul 20, 03:47 AM
• AI Mania Is Eviscerating Global Decision-Making Simon Willison's Weblog — Jul 19, 05:06 AM
• Claude Code uses Bun written in Rust now Simon Willison's Weblog — Jul 19, 03:54 AM
• SQLite Query Explainer Simon Willison's Weblog — Jul 18, 17:19 PM
• Claude make Fable 5 permanent Simon Willison's Weblog — Jul 18, 06:00 AM
• nascheme/quixote Simon Willison's Weblog — Jul 18, 05:27 AM
• Quoting Kimi K3 Simon Willison's Weblog — Jul 17, 13:43 PM
• LLM cliché highlighter Simon Willison's Weblog — Jul 17, 12:11 PM
• Spot birds not golf Simon Willison's Weblog — Jul 17, 02:58 AM
• Firefox in WebAssembly Simon Willison's Weblog — Jul 16, 23:34 PM
• Kimi K3, and what we can still learn from the pelican benchmark Simon Willison's Weblog — Jul 16, 20:19 PM
• Quoting Thibault Sottiaux Simon Willison's Weblog — Jul 16, 17:45 PM
• Inkling: Our open-weights model Simon Willison's Weblog — Jul 16, 15:35 PM
• Mermaid to ASCII art (mermaid-ascii) Simon Willison's Weblog — Jul 16, 14:57 PM
• Quoting Linus Torvalds Simon Willison's Weblog — Jul 16, 13:26 PM
• Mermaid to Unicode box art (grok-mermaid) Simon Willison's Weblog — Jul 16, 00:33 AM
• xai-org/grok-build, now open source Simon Willison's Weblog — Jul 15, 23:59 PM