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How Well Can LLMs Negotiate? NegotiationArena Platform and Analysis

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arxiv 2402.05863 v1 pith:H2MPVF5V submitted 2024-02-08 cs.AI cs.CLcs.GT

classification cs.AIcs.CLcs.GT
keywords agentsllmsnegotiatenegotiationnegotiationarenaresourcesabilitiesbehaviors
verification ladder T0 review T1 audit T2 compute T3 formal
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Negotiation is the basis of social interactions; humans negotiate everything from the price of cars to how to share common resources. With rapidly growing interest in using large language models (LLMs) to act as agents on behalf of human users, such LLM agents would also need to be able to negotiate. In this paper, we study how well LLMs can negotiate with each other. We develop NegotiationArena: a flexible framework for evaluating and probing the negotiation abilities of LLM agents. We implemented three types of scenarios in NegotiationArena to assess LLM's behaviors in allocating shared resources (ultimatum games), aggregate resources (trading games) and buy/sell goods (price negotiations). Each scenario allows for multiple turns of flexible dialogues between LLM agents to allow for more complex negotiations. Interestingly, LLM agents can significantly boost their negotiation outcomes by employing certain behavioral tactics. For example, by pretending to be desolate and desperate, LLMs can improve their payoffs by 20\% when negotiating against the standard GPT-4. We also quantify irrational negotiation behaviors exhibited by the LLM agents, many of which also appear in humans. Together, \NegotiationArena offers a new environment to investigate LLM interactions, enabling new insights into LLM's theory of mind, irrationality, and reasoning abilities.

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Cited by 9 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. TradeVerse: A Longitudinal Benchmark of Political Negotiation in International Trade

    cs.CL 2026-08 conditional novelty 6.0 of 10

    TradeVerse is a longitudinal trade-negotiation benchmark from WTO minutes where current LLMs show a Western-country advantage in respondent identification, over-predict product codes, and generate generic final statements.

  2. Do Humans Bargain Differently with AI? Evidence from Alternating-Offer Games

    econ.GN 2026-08 reject novelty 6.0 of 10

    Humans make lower opening offers to AI than to humans in an alternating-offer bargaining game, and accept more unfair AI offers when the AI's payoff feeds into their own payment.

  3. Strategic Bargaining in Multi-Buyer Markets: Reinforcement Learning from Verifiable Rewards for LLM Negotiations

    cs.LG 2026-07 conditional novelty 6.0 of 10

    RLVR training teaches a 30B LLM to strategically explore a multi-buyer market and extract 70% of available surplus, outperforming frontier models up to 1T parameters in concurrent negotiation.

  4. Choose Your Agent: Tradeoffs in Adopting AI Advisors, Coaches, and Delegates in Multi-Party Negotiation

    cs.GT 2026-02 conditional novelty 6.0 of 10

    Users prefer an AI Advisor but gain most with a Delegate, because human editing filters out the AI's best proposals.

  5. When Identity Overrides Incentives: Representational Choices as Governance Decisions in Multi-Agent LLM Systems

    cs.MA 2026-01 unverdicted novelty 6.0 of 10

    Role-based personas in multi-agent LLM systems suppress payoff-aligned behavior, shifting equilibrium selection by up to 90 percentage points in Tragedy of the Commons versus Green Transition scenarios even with full ...

  6. ARIA: Training Language Agents with Intention-Driven Reward Aggregation

    cs.CL 2025-05 conditional novelty 6.0 of 10

    Clustering language-agent actions into shared intentions and averaging their rewards reduces reward variance and improves policy performance in open-ended dialogue tasks.

  7. The Language of Bargaining: Linguistic Effects in LLM Negotiations

    cs.AI 2026-01 conditional novelty 5.0 of 10

    Language labels shift LLM negotiation outcomes in three games, but the claimed dominance over model choice is inconsistent with the reported model-level gaps.

  8. Beyond Nash Equilibrium: Bounded Rationality of LLMs and humans in Strategic Decision-making

    cs.AI 2025-06 conditional novelty 5.0 of 10

    LLMs reproduce human heuristics like switching after a loss and cooperating when future rounds loom, but apply them more rigidly and adapt less than humans.

  9. Information Bargaining: Bilateral Commitment in Bayesian Persuasion

    cs.GT 2025-06 reject novelty 4.0 of 10

    Bayesian persuasion is restated as a two-sided bargaining game, but the proof reduces to a relabeling and the empirical validation is circular.

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