Reading Karpathy's Lord of the Rings Demo: What Long Context Plus Autonomy Opens for Builders

Unicorn, pelican, Middle-earth: OpenAI co-founder Karpathy is looking for the next AI vibe test

Karpathy generated 3D interactive code from a Tolkien paragraph via Claude Opus (5,500 lines, ~$10), proving spatial reasoning surpasses "pelican test" benchmarks. On-demand game worlds at marginal cost shift AI from text to interactive content, but model blindness to video prevents autonomous refinement.