Tested Sonnet 5.5 to draft an ad before scaling it with Opus 5.5, and it actually cooked

A developer used Sonnet 5.5 to draft a product ad as a test before a planned Opus 5.5 version. The draft opened on a deliberately dull scene before the polished product, and looked finished, but left out three modes and key features despite a full feature list. The post includes the long structured brief, with render, audio and verification requirements.

Disclosure The ad is for the author's own unreleased software.