SimWorld: an open-ended simulator for agents in physical and social worlds

An Open-ended Realistic Simulator for Autonomous Agents in Physical and Social Worlds. These researchers built a Tiny Economy in which different models, participating in a market economy, and challenges to make money, for example with food delivery. Claude and Qwen did pretty well taking a very risky approach, while other models played a more risk averse game, this caused great standard deviation in the results of Claude and Qwen but with high returns.

It's also hilarious to see how OpenAI lost their contract because Qwen and DeepSeek underbid them. https://simworld.org/