Evidence item

We consider the effects of the introduction of a generative AI tool in a large scale field experiment on an online labor market, which lowered employers’ search costs by randomly offering them AI-written first drafts of their job post. The assistance was widely accepted and treated employers were 19% more likely to post a job. It also saved employers time—treated employers spent 44% less time writing their job posts. Despite the substantial increase in job posts, there was no discernible increase in matches in the treatment group.