GPT-5.5 vs Opus 4.8: The Real Winner Was /goal Mode

Why watch

A comparative benchmark testing GPT-5.5 and Opus 4.8 (Claude Code) in building a radial dial launcher macOS app in Swift. Tests both standard and /goal mode to evaluate which produces more usable code. The video reveals unexpected results about token costs and /goal mode effectiveness, plus discusses using Claude Design and Open Design in the app development workflow. For developers interested in AI-assisted coding tool selection.