We address this question using a novel method - generative social simulation - that embeds Large Language Models within Agent-Based Models to create socially rich synthetic platforms. We create a minimal platform where agents can post, repost, and follow others. We find that the resulting following-networks reproduce three well-documented dysfunctions: (1) partisan echo chambers; (2) concentrated influence among a small elite; and (3) the amplification of polarized voices - creating a ‘social media prism’ that distorts political discourse.

1. lmao "generative AI chatbots trained on social media behave like social media users"
2. Shame on ArsTechnica they should be better than to publish a study like this.