Evaluating creative work with artificial intelligence. Evidence from constrained innovation tasks

We study whether a large language model can reliably evaluate human creativity in constrained, innovation-like tasks. Using expert-generated creative outputs from a validated experiment with workers in cultural and creative industries, we embed ChatGPT as an evaluator and benchmark its assessments against expert human judgments obtained through the Consensual Assessment Technique. Study 1 supports AI reliability by showing that AI-based creativity evaluations exhibit internal consistency comparable to that of expert judges across repeated and independent runs, even under conservative scenarios. Replacing a human judge with an AI evaluator does not reduce inter-rater reliability across drawing, mathematical, and verbal tasks. Beyond reliability, AI evaluations display three additional features that are difficult to achieve with human-only panels: lower evaluative variability, systematically higher scores consistent with a potentially more inclusive evaluative stance, and task-independence of evaluative standards. Study 2 further supports task-independence by showing that AI evaluations are structured along fluency, flexibility, originality, and elaboration, with dimension weights that adapt to task-specific constraints.