Simon Willison quotes Romain Huet on OpenAI's GPT-5.5 unifying Codex and main model for agentic coding.
A quote from Romain Huet confirming OpenAI won't release a separate GPT-5.5-Codex model, as coding capabilities are unified.
Release notes for llm 0.31, a command-line tool for accessing large language models, featuring GPT-5.5 support and new options.
Release notes for llm 0.31, a command-line tool for accessing large language models, featuring GPT-5.5 support and new options.
A tool to convert milliseconds to seconds and minutes, created by Simon Willison for LLM report durations.
Simon Willison's newsletter summary featuring tech posts on DeepSeek V4, LiteParse, and Agentic Engineering patterns.
Release of llm-openai-via-codex 0.1a0, enabling OpenAI model access via Codex CLI credentials.
Release of llm-openai-via-codex 0.1a0, a plugin to access OpenAI models via Codex CLI credentials.
Qwen3.6-27B is a new 27B dense model delivering flagship-level coding performance, surpassing larger models, tested locally with GGUF.
A blog post about polluting AI training data with pelicans riding bicycles, linked by Simon Willison.
Simon Willison approves Steve Cosman's project to pollute AI training data with pelicans riding bicycles.
A personal reflection on family, Stack Overflow's impact on LLMs, and a warning to AI companies not to harm the communities that generate training data.
Analysis of Anthropic Mythos's impact on cybersecurity, debunking hype and examining real LLM capabilities in vulnerability detection.
A developer shares a personal history with AI coding tools like GitHub Copilot and Claude Code, exploring their benefits and ethical concerns.
Explores NF4 and FP4 4-bit floating point formats for LLM weight quantization, focusing on Gaussian-distributed weights.
Explores how naming AI chatbots creates distinct personalities, termed the 'Digital Ouija Effect', and its implications.
Analysis of Tailwind's new product ui.sh and how MCP enables businesses to maintain control over AI agent interactions.
Review of a paper on using a meta-agent to automatically design novel AI agent architectures, outperforming hand-crafted systems.
A critique of sharing AI chatbot screenshots, highlighting sycophancy, asymmetry of thought, and preference for human ideas over LLM outputs.
A reflection on AI's impact on content creation, drawing parallels to Tom Petty's 'The Last DJ' and questioning the role of human originality.
