Building an Alien Language from Scratch with LangChain

How 100 AI agents evolved a shared symbolic vocabulary through trade — with no pre-programmed definitions, no mock data, and no shortcuts. The Core Idea Most emergent communication demos cheat. They hardcode symbol meanings, or use mock LLM responses, or simulate the entire thing with random number generators. The result is a demo that looks impressive but teaches you nothing about how actual language models behave when they need to coordinate. I wanted to build something real: two civilizations