Context Engineering Redefines RAG: Four Typed Inputs Streamline LLM Answers
The article formalizes ‘context engineering’, the practice of feeding a single‑document RAG pipeline with four typed pieces—parsed document, parsed question, retrieval subset, and structured answer—so everything converges into one LLM call. This taxonomy, coined by Tobi Lütke and Andrej Karpathy in 2025, lets teams audit, cache and scale RAG reliably.