Kieran Klaassen

Kieran Klaassen's compound engineering system — 27 agents, 21 commands, 14 skills — demonstrated that matching AI model speed to task type can deliver 5x more design iterations in the same timeframe. Separately, upgrading email classification from Gemini Flash 2.0 to 2.5 improved accuracy, summary quality, and reliability in production. The core lesson: the best AI architecture routes different tasks to different models, not the same powerful model to everything.