GraphRAG with TypeSafe Jev: A System One Approach to Scalable Knowledge Graphs

Implementing large-scale GraphRAG systems often creates a "micro-decision bottleneck," as using powerful LLMs for thousands of simple choices is inefficient and costly. A new dual-engine architecture solves this by pairing a fast, "System 1" AI for high-frequency tasks with a "System 2" LLM for complex reasoning. This approach utilizes TypeSafe Jev, a specialized, non-generative model that rapidly makes calibrated probabilistic decisions about entity matching, schema mapping, and relevance scoring. By having