Willow

Consumer chat agent built on a structured, evolving knowledge graph of user information. The real product is the memory layer underneath; the chat is just the surface that exercises it.

Why it matters

You can’t bolt a "remember this" tool onto a chat LLM and expect good memory. Willow runs separate background agents for indexing, graph evolution, maintenance, and retrieval, because the chat-facing model is too lazy about upkeep.