Hi hunters! Solo founder here — AMA about building a market simulator with 128 AI shoppers 🐟

Hi hunters! 👋 I'm Key, solo founder of MarketFish.

I built this because I was tired of guessing whether a product would succeed. MarketFish simulates 128 AI consumers with real budgets, emotions, and biases — they shop for 30 rounds, and their purchase data tells you what real users would do.

Powered by 11 LLMs + 6 academic papers. Open source. MIT.

Today's simulation top pick: an auto-haggle app — consumers in a downturn love saving money.

Happy to answer any questions!