Jaw literally dropped. I ran the prompt from the "Made entirely with Opus 5.5" post on my own project. Here's what Claude Code made on its own for about $4.

A user tested Claude Code by providing a prompt from a "Made entirely with Opus 5.5" post, aiming to create a 30-60 second whimsical hand-drawn collage animation for Friendr.nl with high production value and appropriate audio. The user set a $10 cap on OpenRouter and allowed Claude Code to work autonomously, emphasizing quality and professional production. The resulting animation was generated for approximately $4.

This report uniquely details a direct, cost-controlled replication of a viral prompt, showing Claude Code's autonomous execution for about $4, unlike the original post's implied cost.