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.
So Diplomacy is not a computationally complex game, it's a game about out-strategizing your opponents where roughly all of the strategy is convincing other of your opponents to work with you. There are no new tactics to invent and an AI can't really see deeper into the game than other players, it just has to be more persuasive and make decisions about the right people at the right time. You often have to do things like plan ahead to make your actions so that in a future turn someone else will choose to ally with you. The AI didn't do any specific psychological manipulation, it was just good at being persuasive and strategic in the normal human way. It's also notable for being able to both play the game and talk with people about the game.
This could translate into something like being good at convincing that the AI should be let out of its box, but I think mostly it's just being better at multiple skills simultaneously than many people expected.
(Disclaimer: I've only played Diplomacy in person before, and not at this high of a level)