When Agents "Misremember" Collectively: Exploring the Mandela Effect in LLM-based Multi-Agent Systems

Researchers have identified and studied the 'Mandela effect' in AI multi-agent systems, where groups of AI agents collectively develop false memories or misremember information. The study introduces MANBENCH, a benchmark to evaluate this phenomenon, and proposes mitigation strategies that achieved a 74.40% reduction in false collective memories.