Boris Cherny / Claude Code on agentic search

Boris Cherny’s notes on Claude Code are one of the clearest explanations of why top-tier coding agents moved away from vector DB RAG. The key idea is simple: agentic search in the terminal often outperforms embeddings when the data is structured like code.

Pros

+Explains Claude Code’s shift from vector DB RAG to agentic search
+Grounded in real-world tool design and constraints

Cons

-Focused on code exploration, not unstructured enterprise knowledge bases
-May not cover implementation details for every stack

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Why the Best AI Coding Tools Abandoned RAG (And What They Use Instead)

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Boris Cherny / Claude Code on agentic search

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Highlights

+Explains Claude Code’s shift from vector DB RAG to agentic search
+Grounded in real-world tool design and constraints

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