2025: The year in LLMs by Simon Willison

My tools.simonwillison.net collection of HTML+JavaScript tools was mostly built this way: I would have an idea for a small project, prompt Claude Artifacts or ChatGPT or (more recently) Claude Code via their respective iPhone apps, then either copy the result and paste it into GitHub’s web editor or wait for a PR to be created that I could then review and merge in Mobile Safari.

I have been doing this a lot this past year as well. Most of the site was done this way. First using cursor, then Codex and finally using Claude.