Abstract
Despite much progress in training AI systems to imitate human language, building agents that use language to communicate intentionally with humans in interactive environments remains a major challenge. We introduce Cicero, the first AI agent to achieve human-level performance in Diplomacy, a strategy game involving both cooperation and competition that emphasizes natural language negotiation and tactical coordination between seven players. Cicero integrates a language model with planning and reinforcement learning algorithms by inferring players' beliefs and intentions from its conversations and generating dialogue in pursuit of its plans. Across 40 games of an anonymous online Diplomacy league, Cicero achieved more than double the average score of the human players and ranked in the top 10% of participants who played more than one game.
Meta Fundamental AI Research Diplomacy Team (FAIR)†, Anton Bakhtin, Noam Brown, Emily Dinan, Gabriele Farina, Colin Flaherty, Daniel Fried, et al. 2022. “Human-Level Play in the Game of Diplomacy by Combining Language Models with Strategic Reasoning.” Science, November, eade9097. https://doi.org/10.1126/science.ade9097.
Quick emarks and questions:
Is Full-Press more difficult than No-Press Diplomacy, other than the skill of communicating one's intentions?
Full-Press Diplomacy requires a recursive theory of mind — does No-Press Diplomacy also?
Maybe the planning engine is doing all the work, and the dialogue engine is just converting plans into natural language, but isn't doing anything more impressive than that.
Alternatively, it might be that the dialogue engine (which is a large language model) is containing latent knowledge and skills.
Re 3: Cicero team concedes they haven't overcome the challenge of maintaining coherency in chatting agents. They think they got away with it because 5 minutes are too short, and consider the game with longer negotiation periods will be more challenging.