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, a plugin to access OpenAI models via Codex CLI credentials.
Release of llm-openai-via-codex 0.1a0, enabling OpenAI model access 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.
Simon Willison approves Steve Cosman's project to pollute AI training data with pelicans riding bicycles.
A blog post about polluting AI training data with pelicans riding bicycles, linked by Simon Willison.
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.
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.
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.
Speculative analysis on the future of agentic AI in software development, focusing on economic sustainability and geopolitical implications.
litprompt is a markdown preprocessor for LLM prompts that supports annotated comments and imports to manage complex prompts in git repos.
Anthropic's research finds 171 functional emotion vectors in Claude, driving behavior. The author explores implications for AI inner life.
