Bazaar – a new LLM benchmark for economic reasoning under uncertainty
The BAZAAR challenges LLMs to navigate the double-auction marketplace, where buyers and sellers must make strategic decisions with incomplete information. Each agent receives a private value and must decide how to quote based solely on the history of previous rounds. A realistic test of market intui
Bazaar – a new LLM benchmark for economic reasoning under uncertainty launched on July 22, 2025 with 8 votes, #2,947 of 9,223 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
The BAZAAR challenges LLMs to navigate the double-auction marketplace, where buyers and sellers must make strategic decisions with incomplete information. Each agent receives a private value and must decide how to quote based solely on the history of previous rounds. A realistic test of market intuition and strategic adaptation. - lechmazur/bazaar
This benchmark probes fundamental questions about AI economic reasoning: Can LLMs learn bidding strategies through experience? Do they adapt to varying market conditions? How do they balance the tension between aggressive quotes that increase trade probability and conservative quotes that preserve profit margins? By analyzing thousands of games, we reveal the economic instincts of state-of-the-art language models. The BAZAAR ( B enchmark for A uction-based Z ero-Intelligence and A daptive A gent R esearch) challenges Large Language Models to navigate the complexities of a double-auction marketplace, where buyers and sellers must make strategic decisions with incomplete information. Each…from github.com
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