Tools · The Decoder ·
Unicorn, pelican, Middle-earth: OpenAI co-founder Karpathy is looking for the next AI vibe test
Andrej Karpathy used Claude Opus 5 to turn an opening passage from J.R.R. Tolkien’s “The Lord of the Rings” into a 3D browser scene. The experiment produced about 5,500 lines of code and explores potential tests of AI coding capabilities.