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Picking AI Is No Longer Just About Models — Ethan Mollick's 'Model / App / Harness' Framework Explains the Entire 2026 AI Landscape
Ethan Mollick's game-changing AI framework: Model, App, Harness. The same AI (e.g., Claude Opus 4.6) performs vastly differently across layers. Mollick used Claude Code to turn GPT-1's 117M weights into 80 books in ~1 hour, selling out immediately.