More Victories, Less Cooperation: Assessing Cicero's Diplomacy Play
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Abstract (arXiv)
The boardgame Diplomacy is a challenging setting for communicative and cooperative artificial intelligence. The most prominent communicative Diplomacy AI, Cicero, has excellent strategic abilities, exceeding human players. However, the best Diplomacy players master communication, not just tactics, which is why the game has received attention as an AI challenge. This work seeks to understand the degree to which Cicero succeeds at communication. First, we annotate in-game communication with abstract meaning representation to separate in-game tactics from general language. Second, we run two dozen games with humans and Cicero, totaling over 200 human-player hours of competition. While AI can consistently outplay human players, AI-Human communication is still limited because of AI's difficulty with deception and persuasion. This shows that Cicero relies on strategy and has not yet reached the full promise of communicative and cooperative AI.
Key facts. Cited by 9 papers in the map (data through 7 Oct 2026). Builds on 28 of its 61 references that are in the map. First posted on arXiv 7 Jun 2024.
Builds on
28 of 61 references.
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16 more
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Built on by
Citing papers per year: 2024: 2; 2025: 6; 2026: 1.
9 papers.
- 2025Among Them: A game-based framework for assessing persuasion capabilities of LLMscited by 7
- 2025Democratizing Diplomacy: A Harness for Evaluating Any Large Language Model on Full-Press Diplomacycited by 6
- 2025DipLLM: Fine-Tuning LLM for Strategic Decision-making in Diplomacycited by 4
- 2025Dynamic Epistemic Friction in Dialoguecited by 4
- 2024Personalized Help for Optimizing Low-Skilled Users' Strategycited by 3
- 2025Should I Trust You? Detecting Deception in Negotiations using Counterfactual RLcited by 3
- 2024NewsInterview: a Dataset and a Playground to Evaluate LLMs' Ground Gap via Informational Interviewscited by 2
- 2025Shall We Play a Game? Language Models for Open-ended Wargamescited by 1
- 2026Cooperate to Compete: Strategic Coordination in Multi-Agent Conquestcited by 0
- 2026Cooperate to Compete: Strategic Coordination in Multi-Agent Conquest28 Apr 2026
- 2025Shall We Play a Game? Language Models for Open-ended Wargames21 Sep 2025
- 2025Democratizing Diplomacy: A Harness for Evaluating Any Large Language Model on Full-Press Diplomacy10 Aug 2025
- 2025Dynamic Epistemic Friction in Dialogue12 Jun 2025
- 2025DipLLM: Fine-Tuning LLM for Strategic Decision-making in Diplomacy11 Jun 2025
- 2025Among Them: A game-based framework for assessing persuasion capabilities of LLMs27 Feb 2025
- 2025Should I Trust You? Detecting Deception in Negotiations using Counterfactual RL18 Feb 2025
- 2024NewsInterview: a Dataset and a Playground to Evaluate LLMs' Ground Gap via Informational Interviews21 Nov 2024
- 2024Personalized Help for Optimizing Low-Skilled Users' Strategy14 Nov 2024