I presented an invited keynote at the AI Engineer World’s Fair in San Francisco this week. This is my third time speaking at the event—here are my talks from October …| Simon Willison’s Weblog
A fun new benchmark just dropped! Inspired by the Claude 4 system card—which showed that Claude 4 might just rat you out to the authorities if you told it to …| Simon Willison’s Weblog
GitHub's official MCP server grants LLMs a whole host of new abilities, including being able to read and issues in repositories the user has access to and submit new pull …| Simon Willison’s Weblog
Direct link to a PDF on Anthropic's CDN because they don't appear to have a landing page anywhere for this document. Anthropic's system cards are always worth a look, and …| Simon Willison’s Weblog
Last month ChatGPT got a major upgrade. As far as I can tell the closest to an official announcement was this tweet from @OpenAI: Starting today [April 10th 2025], memory …| Simon Willison’s Weblog
X chatbot tells users it was ‘instructed by my creators’ to accept ‘white genocide as real and racially motivated’| the Guardian
GPT-4o's recent update caused it to be way too sycophantic and disingenuously praise anything the user said. OpenAI's Aidan McLaughlin: last night we rolled out our first fix to remedy …| Simon Willison’s Weblog
The Chatbot Arena has become the go-to place for vibes-based evaluation of LLMs over the past two years. The project, originating at UC Berkeley, is home to a large community …| Simon Willison’s Weblog
LLM 0.23 is out today, and the signature feature is support for schemas—a new way of providing structured output from a model that matches a specification provided by the user. …| Simon Willison’s Weblog
Amazon released three new Large Language Models yesterday at their AWS re:Invent conference. The new model family is called Amazon Nova and comes in three sizes: Micro, Lite and Pro. …| Simon Willison’s Weblog
