This is a submission for Weekend Challenge: Passion Edition
What I Built:
Rivalry Radio is a fake late-night call-in radio show. You type in both sides of any rivalry, hit GO LIVE, and Roxy, a smooth radio veteran, introduces two superfans: Max, who is brash and overconfident, and Poppy, who is calm and devastatingly polite. They argue about whatever you typed while the transcript lights up line by line and an ON AIR sign glows with a bouncing equalizer. Gemini writes the debate, ElevenLabs voices all three characters, and the whole thing runs off a single Cloudflare Worker with no database, no storage, and no FFmpeg.
I spend my nights building an AI video editor as a side project, so I already had opinions about audio pipelines. This weekend I wanted to find out how fast I could ship something with the same muscles but zero seriousness. A working version took one evening. A good one took the weekend, and most of that gap was two free tiers teaching me their fine print.
Demo:
