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Algorithmic Collusion by Large Language Models

Created by
  • Haebom

Author

Sara Fish, Yannai A. Gonczarowski, Ran I. Shorrer

Outline

This paper explores the problem of algorithmic collusion through experiments using algorithmic pricing agents based on a large-scale language model (LLM). Experimental results show that in an oligopolistic market environment, LLM-based pricing agents quickly and autonomously reach over-competitive prices and profits, and that minor changes in LLM prompts significantly affect the level of over-competitive pricing. Off-path analysis using novel techniques reveals that price wars contribute to this phenomenon. These results also apply to auction environments, highlighting the challenges of regulating LLM-based pricing agents and broader AI-based pricing agents.

Takeaways, Limitations

Takeaways:
We experimentally demonstrate that an LLM-based algorithmic pricing agent can autonomously achieve over-competitive prices and profits.
We found that subtle differences in LLM prompts can have a significant impact on pricing outcomes.
Price wars are a contributing factor to algorithmic collusion.
Highlights the difficulties of regulating LLM-based pricing agents.
Limitations:
Difficulty in generalizing due to limitations in the experimental environment.
A more in-depth analysis of the impact of LLM prompts is needed.
Further research is needed on various market structures and competitive environments.
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