Here's my article on Gemini 3 Flash, with four pelicans (one for each of its thinking effort levels) plus an image gallery Web Component that I had Gemini 3 Flash build specially for this post

Simon Willison’s Weblog

Gemini 3 Flash

It continues to be a busy December, if not quite as busy as last year. Today’s big news is Gemini 3 Flash, the latest in Google’s “Flash” l...

Blogged some notes on the new ChatGPT Images model that launched today

Simon Willison’s Weblog

The new ChatGPT Images is here

OpenAI shipped an update to their ChatGPT Images feature - the feature that gained them 100 million new users in a week when they first launched it...

I ported a Python library implementing a full HTML5 parser to JavaScript using GPT-5.2 and Codex CLI in 4.5 hours, and decorated for Christmas and watched Knives Out while I was doing it

Simon Willison’s Weblog

I ported JustHTML from Python to JavaScript with Codex CLI and GPT-5.2 in 4.5 hours

I wrote about JustHTML yesterday—Emil Stenström’s project to build a new standards compliant HTML5 parser in pure Python code using coding age...