Simon Willison builds a new blog feature largely by voice with Codex

Simon Willison says he built a Newsletters index for his blog almost entirely by voice, using the ChatGPT desktop app's Codex voice mode while cooking dinner.

The feature imports weekly Substack posts via RSS and undocumented API, monthly newsletters from a GitHub archive repository, and a private sponsors-only newsletter. He says he switched back to typing for review and fixes before deploying the pull request.