research·May 2026·9 min read
Three architectures of agent memory — and why Trail picked Compile
Karpathy, Tan, and Liu all start from the same diagnosis — your agent is a retriever, not a thinker. They reach three different architectures: retrieve (RAG), compile (LLM Wiki), and act (Fat Skills / GBrain). Trail picked Compile, deliberately. This is what we accept and what we believe is converging.