Template-Type: ReDIF-Paper 1.0 Author-Name: Leonardo Gambacorta Author-X-Name-First: Leonardo Author-X-Name-Last: Gambacorta Author-Name: Han Qiu Author-X-Name-First: Han Author-X-Name-Last: Qiu Author-Name: Shuo Shan Author-X-Name-First: Shuo Author-X-Name-Last: Shan Author-Name: Daniel M Rees Author-X-Name-First: Daniel M Author-X-Name-Last: Rees Title: Generative AI and labour productivity: a field experiment on coding Abstract: In this paper we examine the effects of generative artificial intelligence (gen AI) on labour productivity. In September 2023, Ant Group introduced CodeFuse, a large language model (LLM) designed to assist programmer teams with coding. While one group of programmers used it, other programmer teams were not informed about this LLM. Leveraging this event, we conducted a field experiment on these two groups of programmers. We identified employees who used CodeFuse as the treatment group and paired them with comparable employees in the control group, to assess the impact of AI on their productivity. Our findings indicate that the use of gen AI increased code output by more than 50%. However, productivity gains are statistically significant only among entry-level or junior staff, while the impact on more senior employees is less pronounced. Creation-Date: 2024-09 File-URL: https://www.bis.org/publ/work1208.pdf File-Format: Application/pdf File-Function: Full PDF document File-URL: https://www.bis.org/publ/work1208.htm File-Format: text/html Number: 1208 Keywords: artificial intelligence, productivity, field experiment, big tech Classification-JEL: D22, G31, R30 Handle: RePEc:bis:biswps:1208