More at Stake: How Payoff and Language Shape LLM Agent Strategies in Cooperation Dilemmas

Fuente: arXiv
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Auteurs principaux: Huynh, Trung-Kiet, Duy-Minh, Dao-Sy, Cao, Thanh-Bang, Le, Phong-Hao, Nguyen, Hong-Dan, Quy, Nguyen Lam Phu, Nguyen-Vo, Minh-Luan, Pham, Hong-Phat, Hoa, Pham Phu, Than, Thien-Kim, Tran, Chi-Nguyen, Tran, Huy, Tran-Le, Gia-Thoai, Buscemi, Alessio, Trang, Le Hong, Han, The Anh
Format: Preprint
Publié: 2026
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author Huynh, Trung-Kiet
Duy-Minh, Dao-Sy
Cao, Thanh-Bang
Le, Phong-Hao
Nguyen, Hong-Dan
Quy, Nguyen Lam Phu
Nguyen-Vo, Minh-Luan
Pham, Hong-Phat
Hoa, Pham Phu
Than, Thien-Kim
Tran, Chi-Nguyen
Tran, Huy
Tran-Le, Gia-Thoai
Buscemi, Alessio
Trang, Le Hong
Han, The Anh
author_facet Huynh, Trung-Kiet
Duy-Minh, Dao-Sy
Cao, Thanh-Bang
Le, Phong-Hao
Nguyen, Hong-Dan
Quy, Nguyen Lam Phu
Nguyen-Vo, Minh-Luan
Pham, Hong-Phat
Hoa, Pham Phu
Than, Thien-Kim
Tran, Chi-Nguyen
Tran, Huy
Tran-Le, Gia-Thoai
Buscemi, Alessio
Trang, Le Hong
Han, The Anh
contents As LLMs increasingly act as autonomous agents in interactive and multi-agent settings, understanding their strategic behavior is critical for safety, coordination, and AI-driven social and economic systems. We investigate how payoff magnitude and linguistic context shape LLM strategies in repeated social dilemmas, using a payoff-scaled Prisoner's Dilemma to isolate sensitivity to incentive strength. Across models and languages, we observe consistent behavioral patterns, including incentive-sensitive conditional strategies and cross-linguistic divergence. To interpret these dynamics, we train supervised classifiers on canonical repeated-game strategies and apply them to LLM decisions, revealing systematic, model- and language-dependent behavioral intentions, with linguistic framing sometimes matching or exceeding architectural effects. Our results provide a unified framework for auditing LLMs as strategic agents and highlight cooperation biases with direct implications for AI governance and multi-agent system design.
format Preprint
id arxiv_https___arxiv_org_abs_2601_19082
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle More at Stake: How Payoff and Language Shape LLM Agent Strategies in Cooperation Dilemmas
Huynh, Trung-Kiet
Duy-Minh, Dao-Sy
Cao, Thanh-Bang
Le, Phong-Hao
Nguyen, Hong-Dan
Quy, Nguyen Lam Phu
Nguyen-Vo, Minh-Luan
Pham, Hong-Phat
Hoa, Pham Phu
Than, Thien-Kim
Tran, Chi-Nguyen
Tran, Huy
Tran-Le, Gia-Thoai
Buscemi, Alessio
Trang, Le Hong
Han, The Anh
Artificial Intelligence
Computation and Language
Computer Science and Game Theory
Machine Learning
Multiagent Systems
91A26, 68T05
I.2.11; I.2.6
As LLMs increasingly act as autonomous agents in interactive and multi-agent settings, understanding their strategic behavior is critical for safety, coordination, and AI-driven social and economic systems. We investigate how payoff magnitude and linguistic context shape LLM strategies in repeated social dilemmas, using a payoff-scaled Prisoner's Dilemma to isolate sensitivity to incentive strength. Across models and languages, we observe consistent behavioral patterns, including incentive-sensitive conditional strategies and cross-linguistic divergence. To interpret these dynamics, we train supervised classifiers on canonical repeated-game strategies and apply them to LLM decisions, revealing systematic, model- and language-dependent behavioral intentions, with linguistic framing sometimes matching or exceeding architectural effects. Our results provide a unified framework for auditing LLMs as strategic agents and highlight cooperation biases with direct implications for AI governance and multi-agent system design.
title More at Stake: How Payoff and Language Shape LLM Agent Strategies in Cooperation Dilemmas
topic Artificial Intelligence
Computation and Language
Computer Science and Game Theory
Machine Learning
Multiagent Systems
91A26, 68T05
I.2.11; I.2.6
url https://arxiv.org/abs/2601.19082