Template-Type: ReDIF-Paper 1.0 Series: Tinbergen Institute Discussion Papers Creation-Date: 2022-09-21 Number: 22-067/VII Author-Name: Arnoud V. den Boer Author-Workplace-Name: University of Amsterdam Author-Name: Janusz M. Meylahn Author-Workplace-Name: University of Twente Author-Name: Maarten Pieter Schinkel Author-Workplace-Name: University of Amsterdam Title: Artificial Collusion: Examining Supracompetitive Pricing by Q-learning Algorithms Abstract: We examine recent claims that a particular Q-learning algorithm used by competitors ‘autonomously’ and systematically learns to collude, resulting in supracompetitive prices and extra profits for the firms sustained by collusive equilibria. A detailed analysis of the inner workings of this algorithm reveals that there is no immediate reason for alarm. We set out what is needed to demonstrate the existence of a colluding price algorithm that does form a threat to competition. Classification-JEL: C63, L13, L44, K21 Keywords: keywords File-URL: https://papers.tinbergen.nl/22067.pdf File-Format: application/pdf File-Size: 883.420 bytes Handle: RePEc:tin:wpaper:20220067