Fable 5.2 and Jagged AGI

Ethan Mollick tests Claude Fable 5.2 across filmmaking, hardware hacking, business planning, literary scholarship, academic research and a 450-world 3D portal project, finding it meets expert-level performance on many digital tasks but falls short of full AGI. He calls the result "Jagged AGI": the model's failures are no longer simple hallucinations but lapses in taste and judgment—an accurate but joyless course, a 182-page paper, repeated themes, and a self-built 204-section rulebook that slowed its own work. Most critically, the AI did not notice these problems itself; its critics and fact-checkers caught errors but never asked whether the work was too long, repetitive or fun, leaving that judgment to him.